added --allow-dirty option

[BlaineAtAffirm]

Added an --allow-dirty option. I find this useful for large projects in which I might want to bump multiple version files with different versions. It would seem excessive to commit multiple one line changes separately so I have used this option to get around that.

[peritus]

Thanks for the contribution.

I eventually want to lift that restriction entirely, it is just there as a safety measure because I don't trust my own software.

I'm currently working on #37 which should address your requirement much better, could you head over there and check whether the proposal covers your usecase (or chip in what would be required to fit your usecase)? Thanks.

[BlaineAtAffirm]

updated tests to pass locally.

[peritus]

Closing in favor of #37

[peritus]

I implemented this for the upcoming version 0.5 — which you can install by running

sudo pip install https://github.com/peritus/bumpversion/archive/master.zip#egg=bumpversion-dev

I'd appreciate any testing before the release. Please note the new configuration format (documented in the README)