This release changes the include paths provided by our CMake and
pkg-config integration. The proper include path for the single-header
when using one of the above is now <catch2/catch.hpp>
. This change
also necessitated changes to paths inside the repository, so that the
single-header version is now at single_include/catch2/catch.hpp
, rather
than single_include/catch.hpp
.
- Fixed Objective-C++ build
-Wunused-variable
suppression no longer leaks from Catch's header under Clang- Implementation of the experimental new output capture can now be disabled (#1335)
- This allows building Catch2 on platforms that do not provide things like
dup
ortmpfile
.
- This allows building Catch2 on platforms that do not provide things like
- The JUnit and XML reporters will no longer skip over successful tests when running without
-s
(#1264, #1267, #1310)- See improvements for more details
- pkg-config and CMake integration has been rewritten
- If you use them, the new include path is
#include <catch2/catch.hpp>
- CMake installation now also installs scripts from
contrib/
- For details see the new documentation
- If you use them, the new include path is
- Reporters now have a new customization point,
ReporterPreferences::shouldReportAllAssertions
- When this is set to
false
and the tests are run without-s
, passing assertions are not sent to the reporter. - Defaults to
false
.
- When this is set to
- Added
DYNAMIC_SECTION
, a section variant that constructs its name using stream- This means that you can do
DYNAMIC_SECTION("For X := " << x)
.
- This means that you can do
To fix some of the bugs, some behavior had to change in potentially breaking manner. This means that even though this is a patch release, it might not be a drop-in replacement.
- Listeners are now called before reporter
- This was always documented to be the case, now it actually works that way
- Catch's commandline will no longer accept multiple reporters
- This was done because multiple reporters never worked properly and broke things in non-obvious ways
- This has potential to be a breaking change
- MinGW is now detected as Windows platform w/o SEH support (#1257)
- This means that Catch2 no longer tries to use POSIX signal handling when compiled with MinGW
- Fixed potential UB in parsing tags using non-ASCII characters (#1266)
- Note that Catch2 still supports only ASCII test names/tags/etc
TEST_CASE_METHOD
can now be used on classnames containing commas (#1245)- You have to enclose the classname in extra set of parentheses
- Fixed insufficient alt stack size for POSIX signal handling (#1225)
- Fixed compilation error on Android due to missing
std::to_string
in C++11 mode (#1280) - Fixed the order of user-provided
FALLBACK_STRINGIFIER
in stringification machinery (#1024)- It was intended to be replacement for built-in fallbacks, but it was used after them.
- This has potential to be a breaking change
- Fixed compilation error when a type has an
operator<<
with templated lhs (#1285, #1306)
- Added a new, experimental, output capture (#1243)
- This capture can also redirect output written via C apis, e.g.
printf
- To opt-in, define
CATCH_CONFIG_EXPERIMENTAL_REDIRECT
in the implementation file
- This capture can also redirect output written via C apis, e.g.
- Added a new fallback stringifier for classes derived from
std::exception
- Both
StringMaker
specialization andoperator<<
overload are given priority
- Both
contrib/
now contains dbg scripts that skip over Catch's internals (#904, #1283)gdbinit
for gdblldbinit
for lldb
CatchAddTests.cmake
no longer strips whitespace from tests (#1265, #1281)- Online documentation now describes
--use-colour
option (#1263)
- Fixed bug in
WithinAbs::match()
failing spuriously (#1228) - Fixed clang-tidy diagnostic about virtual call in destructor (#1226)
- Reduced the number of GCC warnings suppression leaking out of the header (#1090, #1091)
- Only
-Wparentheses
should be leaking now
- Only
- Added upper bound on the time benchmark timer calibration is allowed to take (#1237)
- On platforms where
std::chrono::high_resolution_clock
's resolution is low, the calibration would appear stuck
- On platforms where
- Fixed compilation error when stringifying static arrays of
unsigned char
s (#1238)
- XML encoder now hex-encodes invalid UTF-8 sequences (#1207)
- This affects xml and junit reporters
- Some invalid UTF-8 parts are left as is, e.g. surrogate pairs. This is because certain extensions of UTF-8 allow them, such as WTF-8.
- CLR objects (
T^
) can now be stringified (#1216)- This affects code compiled as C++/CLI
- Added
PredicateMatcher
, a matcher that takes an arbitrary predicate function (#1236)
- Modified CMake-installed pkg-config to allow
#include <catch.hpp>
(#1239)- The plans to standardize on
#include <catch2/catch.hpp>
are still in effect
- The plans to standardize on
- Fixed compilation error when compiling Catch2 with
std=c++17
against libc++ (#1214)- Clara (Catch2's CLI parsing library) used
std::optional
without including it explicitly
- Clara (Catch2's CLI parsing library) used
- Fixed Catch2 return code always being 0 (#1215)
- In the words of STL, "We feel superbad about letting this in"
- Hidden tests are not listed by default when listing tests (#1175)
- This makes
catch_discover_tests
CMake script work better
- This makes
- Fixed regression that meant
<windows.h>
could potentially not be included properly (#1197) - Fixed installing
Catch2ConfigVersion.cmake
when Catch2 is a subproject.
- Added an option to warn (+ exit with error) when no tests were ran (#1158)
- Use as
-w NoTests
- Use as
- Added provisional support for Emscripten (#1114)
- Added a way to override the fallback stringifier (#1024)
- This allows project's own stringification machinery to be easily reused for Catch
Catch::Session::run()
now acceptschar const * const *
, allowing it to accept array of string literals (#1031, #1178)- The embedded version of Clara was bumped to v1.1.3
- Various minor performance improvements
- Added support for DJGPP DOS crosscompiler (#1206)
- Fixed compilation error with
-fno-rtti
(#1165) - Fixed NoAssertion warnings
operator<<
is used before range-based stringification (#1172)- Fixed
-Wpedantic
warnings (extra semicolons and binary literals) (#1173)
- Added
CATCH_VERSION_{MAJOR,MINOR,PATCH}
macros (#1131) - Added
BrightYellow
colour for use in reporters (#979)- It is also used by ConsoleReporter for reconstructed expressions
- Catch is now exported as a CMake package and linkable target (#1170)
- Static arrays are now properly stringified like ranges across MSVC/GCC/Clang
- Embedded newer version of Clara -- v1.1.1
- This should fix some warnings dragged in from Clara
- MSVC's CLR exceptions are supported
- Fixed compilation when comparison operators do not return bool (#1147)
- Fixed CLR exceptions blowing up the executable during translation (#1138)
- Many CMake changes
NO_SELFTEST
option is deprecated, useBUILD_TESTING
instead.- Catch specific CMake options were prefixed with
CATCH_
for namespacing purposes - Other changes to simplify Catch2's packaging
- Various performance improvements
- On top of the performance regression fixes
- Experimental support for PCH was added (#1061)
CATCH_CONFIG_EXTERNAL_INTERFACES
now brings in declarations of Console, Compact, XML and JUnit reportersMatcherBase
no longer has a pointless second template argument- Reduced the number of warning suppressions that leak into user's code
- Bugs in g++ 4.x and 5.x mean that some of them have to be left in
- Fixed performance regression from Catch classic
- One of the performance improvement patches for Catch classic was not applied to Catch2
- Fixed platform detection for iOS (#1084)
- Fixed compilation when
g++
is used together withlibc++
(#1110) - Fixed TeamCity reporter compilation with the single header version
- To fix the underlying issue we will be versioning reporters in single_include folder per release
- The XML reporter will now report
WARN
messages even when not used with-s
- Fixed compilation when
VectorContains
matcher was combined using&&
(#1092) - Fixed test duration overflowing after 10 seconds (#1125, #1129)
- Fixed
std::uncaught_exception
deprecation warning (#1124)
- New Matchers
- Regex matcher for strings,
Matches
. - Set-equal matcher for vectors,
UnorderedEquals
- Floating point matchers,
WithinAbs
andWithinULP
.
- Regex matcher for strings,
- Stringification now attempts to decompose all containers (#606)
- Containers are objects that respond to ADL
begin(T)
andend(T)
.
- Containers are objects that respond to ADL
- Reporters will now be versioned in the
single_include
folder to ensure their compatibility with the last released version
- Removed C++98 support
- Removed legacy reporter support
- Removed legacy generator support
- Generator support will come back later, reworked
- Removed
Catch::toString
support- The new stringification machinery uses
Catch::StringMaker
specializations first andoperator<<
overloads second.
- The new stringification machinery uses
- Removed legacy
SCOPED_MSG
andSCOPED_INFO
macros - Removed
INTERNAL_CATCH_REGISTER_REPORTER
CATCH_REGISTER_REPORTER
should be used to register reporters
- Removed legacy
[hide]
tag[.]
,[.foo]
and[!hide]
are still supported
- Output into debugger is now colourized
*_THROWS_AS(expr, exception_type)
now unconditionally appendsconst&
to the exception type.CATCH_CONFIG_FAST_COMPILE
now affects theCHECK_
family of assertions as well asREQUIRE_
family of assertions- This is most noticeable in
CHECK(throws())
, which would previously report failure, properly stringify the exception and continue. Now it will report failure and stop executing current section.
- This is most noticeable in
- Removed deprecated matcher utility functions
Not
,AllOf
andAnyOf
.- They are superseded by operators
!
,&&
and||
, which are natural and do not have limited arity
- They are superseded by operators
- Removed support for non-const comparison operators
- Non-const comparison operators are an abomination that should not exist
- They were breaking support for comparing function to function pointer
std::pair
andstd::tuple
are no longer stringified by default- This is done to avoid dragging in
<tuple>
and<utility>
headers in common path - Their stringification can be enabled per-file via new configuration macros
- This is done to avoid dragging in
Approx
is subtly different and hopefully behaves more as users would expectApprox::scale
defaults to0.0
Approx::epsilon
no longer applies to the larger of the two compared values, but only to theApprox
's valueINFINITY == Approx(INFINITY)
returns true
- Reporters and Listeners can be defined in files different from the main file
- The file has to define
CATCH_CONFIG_EXTERNAL_INTERFACES
before including catch.hpp.
- The file has to define
- Errors that happen during set up before main are now caught and properly reported once main is entered
- If you are providing your own main, you can access and use these as well.
- New assertion macros, *_THROWS_MATCHES(expr, exception_type, matcher) are provided
- As the arguments suggest, these allow you to assert that an expression throws desired type of exception and pass the exception to a matcher.
- JUnit reporter no longer has significantly different output for test cases with and without sections
- Most assertions now support expressions containing commas (ie
REQUIRE(foo() == std::vector<int>{1, 2, 3});
) - Catch now contains experimental micro benchmarking support
- See
projects/SelfTest/Benchmark.tests.cpp
for examples - The support being experiment means that it can be changed without prior notice
- See
- Catch uses new CLI parsing library (Clara)
- Users can now easily add new command line options to the final executable
- This also leads to some changes in
Catch::Session
interface
- All parts of matchers can be removed from a TU by defining
CATCH_CONFIG_DISABLE_MATCHERS
- This can be used to somewhat speed up compilation times
- An experimental implementation of
CATCH_CONFIG_DISABLE
has been added- Inspired by Doctest's
DOCTEST_CONFIG_DISABLE
- Useful for implementing tests in source files
- ie for functions in anonymous namespaces
- Removes all assertions
- Prevents
TEST_CASE
registrations - Exception translators are not registered
- Reporters are not registered
- Listeners are not registered
- Inspired by Doctest's
- Reporters/Listeners are now notified of fatal errors
- This means specific signals or structured exceptions
- The Reporter/Listener interface provides default, empty, implementation to preserve backward compatibility
- Stringification of
std::chrono::duration
andstd::chrono::time_point
is now supported- Needs to be enabled by a per-file compile time configuration option
- Add
pkg-config
support to CMake install command
- Don't use console colour if running in XCode
- Explicit constructor in reporter base class
- Swept out
-Wweak-vtables
,-Wexit-time-destructors
,-Wglobal-constructors
warnings - Compilation for Universal Windows Platform (UWP) is supported
- SEH handling and colorized output are disabled when compiling for UWP
- Implemented a workaround for
std::uncaught_exception
issues in libcxxrt- These issues caused incorrect section traversals
- The workaround is only partial, user's test can still trigger the issue by using
throw;
to rethrow an exception
- Suppressed C4061 warning under MSVC
- The development version now uses .cpp files instead of header files containing implementation.
- This makes partial rebuilds much faster during development
- The expression decomposition layer has been rewritten
- The evaluation layer has been rewritten
- New library (TextFlow) is used for formatting text to output
- The original expression in
REQUIRE_FALSE( expr )
is now reporter properly as!( expr )
(#1051)- Previously the parentheses were missing and
x != y
would be expanded as!x != x
- Previously the parentheses were missing and
Approx::Margin
is now inclusive (#952)- Previously it was meant and documented as inclusive, but the check itself wasn't
- This means that
REQUIRE( 0.25f == Approx( 0.0f ).margin( 0.25f ) )
passes, instead of fails
RandomNumberGenerator::result_type
is now unsigned (#1050)
__JETBRAINS_IDE__
macro handling is now CLion version specific (#1017)- When CLion 2017.3 or newer is detected,
__COUNTER__
is used instead of
- When CLion 2017.3 or newer is detected,
- TeamCity reporter now explicitly flushes output stream after each report (#1057)
- On some platforms, output from redirected streams would show up only after the tests finished running
ParseAndAddCatchTests
now can add test files as dependency to CMake configuration- This means you do not have to manually rerun CMake configuration step to detect new tests
- Evaluation layer has been rewritten (backported from Catch 2)
- The new layer is much simpler and fixes some issues (#981)
- Implemented workaround for VS 2017 raw string literal stringification bug (#995)
- Fixed interaction between
[!shouldfail]
and[!mayfail]
tags and sections- Previously sections with failing assertions would be marked as failed, not failed-but-ok
- Added libidentify support
- Added "wait-for-keypress" option
- Catch's runtime overhead has been significantly decreased (#937, #939)
- Added
--list-extra-info
cli option (#934).- It lists all tests together with extra information, ie filename, line number and description.
- Truthy expressions are now reconstructed properly, not as booleans (#914)
- Various warnings are no longer erroneously suppressed in test files (files that include
catch.hpp
, but do not defineCATCH_CONFIG_MAIN
orCATCH_CONFIG_RUNNER
) (#871) - Catch no longer fails to link when main is compiled as C++, but linked against Objective-C (#855)
- Fixed incorrect gcc version detection when deciding to use
__COUNTER__
(#928)- Previously any GCC with minor version less than 3 would be incorrectly classified as not supporting
__COUNTER__
.
- Previously any GCC with minor version less than 3 would be incorrectly classified as not supporting
- Suppressed C4996 warning caused by upcoming updated to MSVC 2017, marking
std::uncaught_exception
as deprecated. (#927)
- CMake integration script now incorporates debug messages and registers tests in an improved way (#911)
- Various documentation improvements
CATCH_FAIL
macro no longer causes compilation error without variadic macro supportINFO
messages are no longer cleared after being reported once
- Catch now uses
wmain
when compiled under Windows andUNICODE
is defined.- Note that Catch still officially supports only ASCII
- Completed the fix for (lack of) uint64_t in earlier Visual Studios
- All of
Approx
's member functions now accept strong typedefs in C++11 mode (#888)- Previously
Approx::scale
,Approx::epsilon
,Approx::margin
andApprox::operator()
didn't.
- Previously
- POSIX signals are now disabled by default under QNX (#889)
- QNX does not support current enough (2001) POSIX specification
- JUnit no longer counts exceptions as failures if given test case is marked as ok to fail.
Catch::Option
should now have its storage properly aligned.- Catch no longer attempts to define
uint64_t
on windows (#862)- This was causing trouble when compiled under Cygwin
- Catch is now compiled under MSVC 2017 using
std:c++latest
(C++17 mode) in CI - We now provide cmake script that autoregisters Catch tests into ctest.
- See
contrib
folder.
- See
- Unexpected exceptions are no longer ignored by default (#885, #887)
- Catch no longer attempts to ensure the exception type passed by user in
REQUIRE_THROWS_AS
is a constant reference.- It was causing trouble when
REQUIRE_THROWS_AS
was used inside templated functions - This actually reverts changes made in v1.7.2
- It was causing trouble when
- Catch's
Version
struct should no longer be double freed when multiple instances of Catch tests are loaded into single program (#858)- It is now a static variable in an inline function instead of being an
extern
ed struct.
- It is now a static variable in an inline function instead of being an
- Attempt to register invalid tag or tag alias now throws instead of calling
exit()
.- Because this happen before entering main, it still aborts execution
- Further improvements to this are coming
CATCH_CONFIG_FAST_COMPILE
now speeds-up compilation ofREQUIRE*
assertions by further ~15%.- The trade-off is disabling translation of unexpected exceptions into text.
- When Catch is compiled using C++11,
Approx
is now constructible with anything that can be explicitly converted todouble
. - Captured messages are now printed on unexpected exceptions
- Clang's
-Wexit-time-destructors
should be suppressed for Catch's internals - GCC's
-Wparentheses
is now suppressed for all TU's that includecatch.hpp
.- This is functionally a revert of changes made in 1.8.0, where we tried using
_Pragma
based suppression. This should have kept the suppression local to Catch's assertions, but bugs in GCC's handling of_Pragma
s in C++ mode meant that it did not always work.
- This is functionally a revert of changes made in 1.8.0, where we tried using
- You can now tell Catch to use C++11-based check when checking whether a type can be streamed to output.
- This fixes cases when an unstreamable type has streamable private base (#877)
- Details can be found in documentation
- We have added VS 2017 to our CI
- Work on Catch 2 should start soon
- TAP reporter now behaves as if
-s
was always set- This should be more consistent with the protocol desired behaviour.
- Compact reporter now obeys
-d yes
argument (#780)- The format is "XXX.123 s: " (3 decimal places are always present).
- Before it did not report the durations at all.
- XML reporter now behaves the same way as Console reporter in regards to
INFO
- This means it reports
INFO
messages on success, if output on success (-s
) is enabled. - Previously it only reported
INFO
messages on failure.
- This means it reports
CAPTURE(expr)
now stringifiesexpr
in the same way assertion macros do (#639)- Listeners are now finally documented.
- Listeners provide a way to hook into events generated by running your tests, including start and end of run, every test case, every section and every assertion.
- Catch no longer attempts to reconstruct expression that led to a fatal error (#810)
- This fixes possible signal/SEH loop when processing expressions, where the signal was triggered by expression decomposition.
- Fixed (C4265) missing virtual destructor warning in Matchers (#844)
std::string
s are now taken byconst&
everywhere (#842).- Previously some places were taking them by-value.
- Catch should no longer change errno (#835).
- This was caused by libstdc++ bug that we now work around.
- Catch now provides
FAIL_CHECK( ... )
macro (#765).- Same as
FAIL( ... )
, but does not abort the test.
- Same as
- Functions like
fabs
,tolower
,memset
,isalnum
are now used withstd::
qualification (#543). - Clara no longer assumes first argument (binary name) is always present (#729)
- If it is missing, empty string is used as default.
- Clara no longer reads 1 character past argument string (#830)
- Regression in Objective-C bindings (Matchers) fixed (#854)
- We have added VS 2013 and 2015 to our CI
- Catch Classic (1.x.x) now contains its own, forked, version of Clara (the argument parser).
Cygwin issue with gettimeofday
- #define
was not early enough
- Matchers have new, simpler (and documented) interface.
- Catch provides string and vector matchers.
- For details see Matchers documentation.
- Changed console reporter test duration reporting format (#322)
- Old format:
Some simple comparisons between doubles completed in 0.000123s
- New format:
xxx.123s: Some simple comparisons between doubles
(There will always be exactly 3 decimal places)
- Old format:
- Added opt-in leak detection under MSVC + Windows (#439)
- Enable it by compiling Catch's main with
CATCH_CONFIG_WINDOWS_CRTDBG
- Enable it by compiling Catch's main with
- Introduced new compile-time flag,
CATCH_CONFIG_FAST_COMPILE
, trading features for compilation speed.- Moves debug breaks out of tests and into implementation, speeding up test compilation time (~10% on linux).
- More changes are coming
- Added TAP (Test Anything Protocol) and Automake reporters.
- These are not present in the default single-include header and need to be downloaded from GitHub separately.
- For details see documentation about integrating with build systems.
- XML reporter now reports filename as part of the
Section
andTestCase
tags. Approx
now supports an optional margin of absolute error- It has also received new documentation.
- Silenced C4312 ("conversion from int to 'ClassName *") warnings in the evaluate layer.
- Fixed C4512 ("assignment operator could not be generated") warnings under VS2013.
- Cygwin compatibility fixes
- Signal handling is no longer compiled by default.
- Usage of
gettimeofday
inside Catch should no longer cause compilation errors.
- Improved
-Wparentheses
suppression for gcc (#674)- When compiled with gcc 4.8 or newer, the suppression is localized to assertions only
- Otherwise it is supressed for the whole TU
- Fixed test spec parser issue (with escapes in multiple names)
- Various documentation fixes and improvements
Xml:
(technically the first two are breaking changes but are also fixes and arguably break few if any people)
- C-escape control characters instead of XML encoding them (which requires XML 1.1)
- Revert XML output to XML 1.0
- Can provide stylesheet references by extending the XML reporter
- Added description and tags attributes to XML Reporter
- Tags are closed and the stream flushed more eagerly to avoid stdout interpolation
Other:
REQUIRE_THROWS_AS
now catches exception byconst&
and reports expected type- In
SECTION
s the file/ line is now of theSECTION
. not theTEST_CASE
- Added std:: qualification to some functions from C stdlib
- Removed use of RTTI (
dynamic_cast
) that had crept back in - Silenced a few more warnings in different circumstances
- Travis improvements
- Fixed inconsistency in defining
NOMINMAX
andWIN32_LEAN_AND_MEAN
insidecatch.hpp
. - Fixed SEH-related compilation error under older MinGW compilers, by making Windows SEH handling opt-in for compilers other than MSVC.
- For specifics, look into the documentation.
- Fixed compilation error under MinGW caused by improper compiler detection.
- Fixed XML reporter sometimes leaving an empty output file when a test ends with signal/structured exception.
- Fixed XML reporter not reporting captured stdout/stderr.
- Fixed possible infinite recursion in Windows SEH.
- Fixed possible compilation error caused by Catch's operator overloads being ambiguous in regards to user-defined templated operators.
- Catch now runs significantly faster for passing tests
- Microbenchmark focused on Catch's overhead went from ~3.4s to ~0.7s.
- Real world test using JSON for Modern C++'s test suite went from ~6m 25s to ~4m 14s.
- Catch can now run specific sections within test cases.
- For now the support is only basic (no wildcards or tags), for details see the documentation.
- Catch now supports SEH on Windows as well as signals on Linux.
- After receiving a signal, Catch reports failing assertion and then passes the signal onto the previous handler.
- Approx can be used to compare values against strong typedefs (available in C++11 mode only).
- Strong typedefs mean types that are explicitly convertible to double.
- CHECK macro no longer stops executing section if an exception happens.
- Certain characters (space, tab, etc) are now pretty printed.
- This means that a
char c = ' '; REQUIRE(c == '\t');
would be printed as' ' == '\t'
, instead of== 9
.
- This means that a
- Text formatting no longer attempts to access out-of-bounds characters under certain conditions.
- THROW family of assertions no longer trigger
-Wunused-value
on expressions containing explicit cast. - Breaking into debugger under OS X works again and no longer required
DEBUG
to be defined. - Compilation no longer breaks under certain compiler if a lambda is used inside assertion macro.
- Catch's CMakeLists now defines install command.
- Catch's CMakeLists now generates projects with warnings enabled.
- Catch now supports breaking into debugger on Linux
- Generators no longer leak memory (generators are still unsupported in general)
- JUnit reporter now reports UTC timestamps, instead of "tbd"
CHECK_THAT
macro is now properly defined asCATCH_CHECK_THAT
when usingCATCH_
prefixed macros
- Types with overloaded
&&
operator are no longer evaluated twice when used in an assertion macro. - The use of
__COUNTER__
is supressed when Catch is parsed by CLion- This change is not active when compiling a binary
- Approval tests can now be run on Windows
- CMake will now warn if a file is present in the
include
folder but not is not enumerated as part of the project - Catch now defines
NOMINMAX
andWIN32_LEAN_AND_MEAN
before includingwindows.h
- This can be disabled if needed, see documentation for details.
- Moved CMakeLists.txt to root, made it friendlier for CLion and generating XCode and VS projects, and removed the manually maintained XCode and VS projects.
- Approx now supports
>=
and<=
- Can now use
\
to escape chars in test names on command line - Standardize C++11 feature toggles
- Blue shell colour
- Missing argument to
CATCH_CHECK_THROWS
- Don't encode extended ASCII in XML
- use
std::shuffle
on more compilers (fixes deprecation warning/error) - Use
__COUNTER__
more consistently (where available)
- Tweaks and changes to scripts - particularly for Approval test - to make them more portable
Release notes were not maintained prior to v1.6.0, but you should be able to work them out from the Git history