Support for Monix Task and Observable

[ghostdogpr]

Fixes #212

• Instances of Schema for Task and Observable
• Extension methods checkAsync and executeAsync that return a Task
• Small sample project that shows usage of a Task in a query and an Observable in a subscription
• Documentation

[yoohaemin]

Hey, looks fine overall but I think you could use the interop-monix module instead of the interop-cats module for the conversions themselves. That would simplify the code further and possibly yield better performance.

[jvican]

@ghostdogpr Thanks for looking into this so quickly! The code LGTM 👍 You might want to ask for more feedback in the gitter channel for monix https://gitter.im/monix/monix. FYI I've tried the contents in this PR in a branch and it works there too. Will report back if I experience any issues

[ghostdogpr]

@jvican good idea, I left a message on their Gitter. Thanks for testing too!

[ghostdogpr]

I changed the implicit requirement from Schedule to ConcurrentEffect[Task], because there is already one in scope within Monix TaskApp. That way, the line implicit val monixScheduler: Scheduler = scheduler is no longer needed.

[ghostdogpr]

I’m planning to merge this one tomorrow if there are no further remarks. I’ll release a version right after.

[jvican]

Thank you @ghostdogpr for following up on this and being so quick on resolving this issue! Will upgrade to the new version soon.