resolves #141: git ship open changes error message
resolve #150: optimize git-ship checkouts
refactor: Separate git-hack features
resolves #128: Fix extract bug
More rounded out command description
ShellCheck linter
Fix lint errors
New arrangement of feature steps
Merge branch 'master' into kg-git-kill-branchname

Conflicts:
	documentation/git-kill.md
	git-kill
	helpers/git_helpers.sh
	man/man1/git-kill.1
	release-notes.md