Pydori

- Fixed Event objects having the wrong link to their main and secondary cards.
- Fixed Event objects not returning boost member objects correctly.

- Fixed all resource links not redirecting to the right url.
- Known issue: some resource link cannot be found.

Everything is a BandoriLoader now!?

Additions
- linting support with flake8
- BandoriObject inherits from BandoriLoader
- BandoriObject dump function for json
- bandori database endpoints: card, chara, degree, stamp, comic, skill
- BandoriApi functionality to switch api to use when requesting GET
- get_active_gachas() for DBandoriApi
- Docs updated
- Contributing guidelines updated

Removed
- BandoriLoader as an attribute in BandoriObject
- Got rid of some faulty tests
- get_all()

Changes
- All BandoriObjects have a prefix 'D' or 'P' now to differentiate between objects retrieved from Bandori **P**arty or Bandori **D**atabase
- Separated endpoint functions by API. Bandori party class in p_api.py, and Bandori database class in d_api.py. Each has their own BandoriApi class - PBandoriApi and DBandoriApi
- BandoriApi.py now contains the function to instantiate the class depending on which api you want

Files have been reorganized in this update: the "models" directory contains base.py, gamodels.py, ptymodels.py which are just (separated) pieces of the original base_objects.py from previous versions. Also bandori_loader.py was renamed to loader.py. This is just to keep everything more organized as more endpoints are planned to be added in the future.

- updated README with usage section

This brings a couple of fixes related to filters not working.
- Songs, Bands, and Gachas will now use the filters properly
- filters now work alongside ids (before, if a list of ids was present, nothing would be filtered)
- test cases updated to the right values

- Bandori Members actually have an image and square_image now