haskell-debug-adapter-0.0.31.0: Changelog.md

20190505 haskell-debug-adapter-0.0.31.0
  * [MODIFY] refactor some types.


20190402 haskell-debug-adapter-0.0.30.0
  * [INFO] support ghci-dap-0.0.12.0.


20190301 haskell-debug-adapter-0.0.29.0
  * [INFO] start developping, based on phoityne-vscode-0.0.28.0.