GitExtensions folder added to ignore list

Generated tag from TravisCI for build 3714 at Mon Feb 15 10:16:34 UTC…

… 2021

Bumped up the version number

Merge pull request cpputest#649 from basvodde/master

Added extra check to ensure no mistakes on OSX packaging.

Merge pull request cpputest#634 from basvodde/master

Release 3.7.1

Merge pull request cpputest#623 from basvodde/master

Preparing for Release 3.7

Re-generated files with new autoreconf

Fixed a typo

CppUTest v3.4