v0.6.0.0: Merge branch 'develop' into rc/0.6.0.0

v0.6.0.0

• (#658) Include infrastructure for experimental WebGHC support.
• (#664) Update GHCJS to include a critical bugfix to the -dedupe flag. (See obsidiansystems/ghcjs#3 for more information.)
• Bump
  • all-cabal-hashes to more recent snapshot of Hackage.
  • reflex to 0.7.1.0.
  • reflex-dom/reflex-dom-core to 0.6.0.0.
  • reflex-fsnotify to 0.2.1.1.
  • reflex-ghci to 0.1.4.1.
  • reflex-process to 0.3.0.0.
  • reflex-vty to 0.1.4.0.
  • android-activity. It now detects the number of cores on Android devices to utilize them better.
  • pandoc to 2.11.0.2 (bumping various dependencies as well)
• Remove support for haskell-ide-engine