------------------------
**Enhancments**
- A few more documentation updates (especially tools.py)
- Removed new_k_bounds function from tools.py
- Added ``w`` parameter to cosmolopy dictionary in ``cosmo.py``
- Changed cosmography significantly to use cosmolopy in general
- Generally tidied up some of the update mechanisms.
- **API CHANGE**: cosmography.py no longer exists -- I've chosen to utilise
cosmolopy more heavily here.
- Added Travis CI usage
**Bugfixes**
- Fixed a pretty bad bug where updating h/H0 would crash the program if
only one of omegab/omegac was updated alongside it
- Fixed a compatibility issue with older versions of numpy in cumulative
functions
----------------------