• add branch filtering with filter_command and filter_regex in g10k config, fixes #166
• treat purge_whitelist as globs, not fixed filenames, fixes #169 (thanks to @raphink)
• add git_dir and git_url fields .g10k-deploy.json, fixes #170 (again thanks to @raphink)
• add error_if_branch_is_missing g10k config setting to error out if the specified branch does not exists, fixes #160