Merge pull request flairNLP#1813 from flairNLP/prepare-biomed-release

Prepare biomed release

Merge pull request flairNLP#1740 from flairNLP/flairNLPGH-1739-bext-r…

…elease

flairNLPGH-1739: prepare release 0.5.1

Update README.md

Merge pull request flairNLP#1382 from flairNLP/flairNLPGH-1378-releas…

…e-4-5

flairNLPGH-1377: fix torch 1.4.0 error

Update README.md

Update README.md

Merge pull request flairNLP#767 from zalandoresearch/flairNLPGH-563-f…

…lair-0.4.2-release-prep

flairNLPGH-563: prepare 0.4.2 release

flairNLPGH-556: increment Flair version number

flairNLPGH-316: explanations

flairNLPGH-205: bump version number