Changes pre-ANTARES filter

Full support for import of SuperRAENN, Superphot, and ParSNIP packages for other feature set generations.

What's Changed

• Small PR to allow manual input of sample means by @kdesoto-astro in #150
• Update README.md by @delucchi-cmu in #155
• Iminuit sampler by @hombit in #151
• Update paths to new git org. by @delucchi-cmu in #157
• light-curve package based sampler by @hombit in #152
• Benchmarks for licu and iminuit samplers by @hombit in #160
• hotfix to allow old LCs to be read by @kdesoto-astro in #161
• Add no-covers to fns calling alerce and antares by @OliviaLynn in #156
• Implement posteriors generator by @camposandro in #162
• Remove tests for python 3.8 by @delucchi-cmu in #165
• Major changes to accommodate addition of LightGBM to classifier suite by @kdesoto-astro in #168
• Additional small changes by @kdesoto-astro in #169
• Changed how groups of posterior features are stored for faster K-folds by @kdesoto-astro in #170
• small changes by @kdesoto-astro in #171
• Many object organization changes, finished incorporated external clas… by @kdesoto-astro in #172
• Fixed superraenn API and added PACMAP by @kdesoto-astro in #173

Full Changelog: v0.0.3...v.0.0.5