travis: Create empty ChangeLog before running `cabal sdist`
removing spaces.
Revert "removing spaces."

This reverts commit 986eedcc75c4f369f536485d786b303b69989fe4.
Cleanup ghc-mod help output
formatting: FillSig.hs
Fix compiling with HSE >= 1.16.0
Merge branch 'master' into release
Bump version to 5.0.0.1