Renamed variables in contact state

[cmastalli]

Unfortunately, the current version of the ContactState.msg does not follow a standard.
This modification breaks the API, as the old-stored messages won't be compatible.

Therefore, this modification will lead to a jump in the version.
@wxmerkt - I won't merge this PR until our packages are compatible.

Final note
If you have stored a rosbag with previous standard, then you will need to use v0.0.1.

[wxmerkt]

Can we please also add migration rules in order to be able to update old log files (I have ~100 GB of logs from the MPC experiments so this can help in updating them)?

[cmastalli]

Can we please also add migration rules in order to be able to update old log files (I have ~100 GB of logs from the MPC experiments so this can help in updating them)?

Oh, I didn't know about this possibility. I fully agree with you, just give sometime to figure out how to do it.

Thanks for the feedback :)

[wxmerkt]

I'll start using this branch / the updated messages from today for experiments and will update the code where no PRs exist yet

[cmastalli]

@wxmerkt -- let me know if this all we need!

[cmastalli]

@wxmerkt -- it seems that it is not pulling the branch from my forked copy of the repository.

[wxmerkt]

I would ignore the travis failure, will test locally ~tomorrow

[wxmerkt]

I believe this works well - I can still parse old logs. We can go ahead with merging :-)