Update docs with new CMake minimum 3.10

Author: hjmallon

.github/PULL_REQUEST_TEMPLATE.md

@@ -34,7 +34,7 @@
 
 * I've checked this [Git style guide](https://0.readthedocs.io/en/latest/git.html). **[Yes|No]**
 * I've checked this [CMake style guide](https://0.readthedocs.io/en/latest/cmake.html). **[Yes|No]**
-* My change will work with CMake 3.5 (minimum requirement for Hunter). **[Yes|No]**
+* My change will work with CMake 3.10 (minimum requirement for Hunter). **[Yes|No]**
 * I will try to keep this pull request as small as possible and will try not to mix unrelated features. **[Yes|No]**
 
 ---

docs/quick-start/cmake.rst

@@ -4,7 +4,12 @@
 Notes about version of CMake
 ----------------------------
 
-* `3.5.0`_ **Minimum required**
+* `3.10.0`_ **Minimum required**
+
+  * CMake upstream dropping support for versions before 3.10
+  * `CMake release notes <https://cmake.org/cmake/help/latest/release/3.31.html#deprecated-and-removed-features>`__
+
+* `3.5.0`_
 
   * Since: `PR #689 <https://github.com/cpp-pm/hunter/pull/689>`__
 
@@ -38,6 +43,8 @@ Notes about version of CMake
 
 .. note::
 
+  CMake 3.5 can be used with Hunter versions before v0.26.
+
   In theory CMake 3.0 can be used with Hunter versions before v0.22 but in
   practice you have to work with v0.14.3 because ``continue`` added to
   v0.14.4 code.