Reynir-correct

* Updated to mirror changes in version 3.0.1 of GreynirPackage and BinPackage
* Several additions to pattern checker, for instance:
* Wrong use of the preposition *að*
* Particles such as *verða sér út[i] um*
* Overuse of the verb *vera*: *Ég er ekki að skilja þetta* ("dvalarhorf")
* Maintain `Tok.original` and `Tok.origin_spans` attributes from the tokenizer in `CorrectToken` instances
* MInimize number of spelling suggestions that would not fit grammatically into a sentence

* Many enhancements in error detection and handling
* Measurement pipeline improved, especially for token-level error detection
* Type annotations added
* No significant API changes

* Update to stay in sync with GreynirPackage 2.8.1
* No material changes to functionality

* Various fixes and updates to grammar checker
* Evaluation program `eval/eval.py` added and enhanced. It measures GreynirCorrect's performance on the [iceErrorCorpus](https://github.com/antonkarl/iceErrorCorpus) collection of annotated errors in text.
* Type annotations added.

* Support for errors in prepositions with place names added
* Type annotations added
* Capitalization bug fixes
* eval.py added

* Lots of type annotations added
* Adapted to work with Tokenizer 2.1.0 / ReynirPackage 2.5.0, which leave the final period of an abbreviation intact when it ends a sentence
* Support for JSON serialization of sentence objects and corrected tokens