0.4.5

• Add --file option
• Fix git subrepo status command for subrepos that share a common prefix. Closes #534.
• Don't allow -b and --all
• Fix documentation links
• fix tests to support use of a default branch git config that is not "master"
• pass --force to git add so a user's global .gitignore does not affect tests
• Fix .rc and enable-completion.sh for zsh before 5.1
• Better format for options
• The fpath variable is an array; expand correctly