Introduced a more smart git status helper.

Running a push only if there are local commits.

Add-on: option to push to a different remote.
Added a --each command to run something.

substance --each -- echo {{repoName}}

Plus: there are two supported variables currently.
{{repoName}}: e.g. lens.git, which is useful to register remotes.
{{branch}}: do whatever with the current branch name