Updated git-flow to the latest stable release 1.12.2.

Changelog for major release 1.12.0:

• Bugfixes
  • Remove inconsistency when pre_hook fails.
  • Perform git push before deleting branch.
• Enhancement
  • Review your commits more easier on figuring out what this feature/bugfix added exactly.
  • Add option that will not allow the a merge back into the develop branch.
  • Also use core.hooksPath for suggestion for the hook path during initialization.
  • Add .gitattributes to enforce Unix line endings for certain files.
  • Add parameters to set names for the branches during the init command.

Full changelog is available here.

Created a test Git repository and tested a few Git Flow commands all of which
worked as expected.