0.4

• Make default --output to be .travis.yml; use --stdout to output to standard output.
• Add GHC-8.8 support
• Use cabal-install-3.0 by default
• Experimental support for GHCJS jobs
• A lot of new configuration options

0.2.1

• local-ghc-options are always applied (independent of copy-fields value)
• Add GHC-8.6.4 to known compilers

0.2

• Large configuration rework