Merge pull request facebook#750 from facebook/dev

fixed wrong assert() condition

Merge pull request facebook#686 from facebook/dev

v1.2.0

Merge branch 'dev'

Merge pull request facebook#531 from facebook/dev

Zstandard v1.1.3

updated manual

minor display improvement in fuzzer when nb of tests is very large

updated NEWS

Merge pull request facebook#311 from Cyan4973/dev

Dev

Merge pull request facebook#295 from Cyan4973/dev

v0.8.1

Merge pull request facebook#274 from inikep/dev06

legacy decoders v0.7 and v0.8