Parangonar

A major new version of parangonar is here, refactoring sequence and note aligners, adding new models, better documentations, and tests:

- TheGlueNote
- refactored DTW, NWTW
- weightedDTW, weightedNWTW
- OLTW
- updated and restructured readme and getting started
- tests for all note aligners
- tests for all sequence aligners

this release adds:

- improved automatic offline alignment: `DualDTWNoteMatcher`
- online / realtime alignment: `OnlineTransformerMatcher` and `OnlinePureTransformerMatcher`
- getting started notebook

there is now a pytorch dependency due to pretrained models for online alignment

previous matchers are still supported:

- automatic offline alignment: `AutomaticNoteMatcher`
-anchor point-enhanced alignment: `AnchorPointNoteMatcher`

Happy Matching!