users-guide: Update release notes and language extensions
authorTakenobu Tani <takenobu.hs@gmail.com>
Fri, 13 Apr 2018 15:31:23 +0000 (11:31 -0400)
committerBen Gamari <ben@smart-cactus.org>
Fri, 13 Apr 2018 15:33:09 +0000 (11:33 -0400)
commitf02309fe66606ffbd2d52d9347438e11890f7cfa
treefd3d3612d864583cbff1741695a44e62c6da997f
parentc4814ab6b8d756ae0e32c9a9f44e4888c4e24763
users-guide: Update release notes and language extensions

Update release notes and language extensions for GHC 8.6.1.

* Add `BlockArguments` and `NumericUndescores` in release note
* Fix directive for `HexFloatLiterals` and `NumericUndescores`

Test Plan: build

Reviewers: bgamari

Reviewed By: bgamari

Subscribers: thomie, carter

Differential Revision: https://phabricator.haskell.org/D4579
docs/users_guide/8.6.1-notes.rst
docs/users_guide/glasgow_exts.rst