Quickumls

- [NEW] Added support for [unqlite](https://github.com/coleifer/unqlite-python) as an alternative to leveldb for storage of CUIs and Semantic Types. This allows creating multiple QuickUMLS matchers with from the same installation.
- [NEW] added support for conversion of all uppercase words ([48](https://github.com/Georgetown-IR-Lab/QuickUMLS/pull/48), thank you sandertan!).
- [NEW] Automatically downloads SpaCy data for selected language if missing.
- [FIX] Mitigated [52](https://github.com/Georgetown-IR-Lab/QuickUMLS/issues/52).

- [NEW] QuickUMLS is **finally** pip installable! (Fixes 18)

- [NEW] Added support for CygWin and MinGW.

- [FIX] Solves 28

This minor release improves multi-lingual support and fixes some bugs.

- [NEW] QuickUMLS now honors language chosen during installation
- [FIX] Switched from SpaCy to NLTK for stopwords detection to fix [22](https://github.com/Georgetown-IR-Lab/QuickUMLS/issues/22)
- [FIX] Bugfix for [24](https://github.com/Georgetown-IR-Lab/QuickUMLS/issues/24)

- [FIXED] closed [issue 12](https://github.com/Georgetown-IR-Lab/QuickUMLS/issues/12) which was causing issues in installation when using Python 2.