Adithya Kumar

@harendra-kumar Can you do this for `appveyor.yml`

- [ ] Appveryor (@harendra-kumar) - [x] GithubCI - [x] TravisCI - [x] CircleCI

Can you fix the CI.

We can possibly have `zipConcurrentlyWithM` for concurrent zipping. We should leave `zipWith(M)` alone as they break existing code.

Should be done for all the core players in the library, - StreamD - StreamK - Fold (FoldD + FoldK TBD) - Unfold (UnfoldD + UnfoldK TBD) - ParserD -...

I wonder if there is an easier way to track/check this.

Bug in the interconversion of parsers, ``` import qualified Streamly.Internal.Data.Parser as Parser import qualified Streamly.Internal.Data.Parser.ParserD as D import qualified Streamly.Internal.Data.Fold as Fold import qualified Streamly.Internal.Data.Stream as Stream main1 = Stream.parse...

See https://github.com/composewell/streamly/pull/1838

See https://github.com/composewell/streamly/pull/1976

The following test also has the same exit failure, https://ci.appveyor.com/project/harendra-kumar/streamly/builds/38059019 ``` Test suite failure for package streamly-tests-0.0.0 Unicode.Stream: exited with: ExitFailure (-1073741675) ```