Release version 1.6

Changes:
 - Added support for Inno Setup 5.5.7 (and 5.5.8) installers
 - Added a --collisions=rename-all option
 - Changed --collisions=rename to omit the suffix for the file that
   would have been extracted with --collisions=overwrite instead of the
   first encountered file
 - Fixed @lang suffix sometimes missing for the first file with the
   --collisions=rename option
 - Fixed build error with CMake 3.5
 - Now compiles in C++14 mode if supported
 - Unsafe characters in special constant strings (ie ':' in {code:…})
   are now replaced with '$'
 - Windows: Fixed error message if the source file could not be opened
 - Windows: Fixed progress bar flickering while printing extracted
   filenames
 - Windows binaries: Fixed crash on platforms without AVX support

VERSION

@@ -1,4 +1,4 @@
-innoextract 1.6-dev
+innoextract 1.6
 
 Known working Inno Setup versions:
 Inno Setup 1.2.10 to 5.5.8

doc/innoextract.1

@@ -1,6 +1,6 @@
 .\" Manpage for innoextract.
 .\" Contact [email protected] to correct errors or typos.
-.TH innoextract 1 "2016-03-02" "1.5"
+.TH innoextract 1 "2016-03-02" "1.6"
 .SH NAME
 innoextract - tool to extract installers created by Inno Setup
 .SH SYNOPSIS