utility function for creating observables for closeable resources
switch from AutoCloseable to Closeable for java 6.
UnsafeFunc0 now extends Callable.
Use currying to improve type inference
Rename to sliding and tumbling
[Gradle Release Plugin] - pre tag commit:  '0.19.4'.
[Gradle Release Plugin] - new version commit:  '0.19.5-SNAPSHOT'.
Version 0.19.4
Backpressure & 0.20.0-RC1
Merge pull request #1412 from benjchristensen/backpressure-9

Backpressure & 0.20.0-RC1
Set scalatest as testCompile dependency

Gradle now generates correct eclipse dependencies
Remove provided configuration for test dependencies
Fix Merge Bug

If the queue being drained did not complete due to the backpressure request being fulfilled, it could onComplete before draining the queue and miss values.
Clarity about batching request
Test timing

Adjust timing for slower machines (such as CloudBees)
Merge pull request #1414 from benjchristensen/merge-fixes

Merge Fixes
Merge pull request #1398 from zsxwing/rxscala-currying

RxScala: Use currying to improve type inference
Merge pull request #1282 from abersnaze/closeable

utility function for creating observables for closeable resources
Use Subscriber.onStart as idiomatic backpressure start point
flatMapAsync test was non-deterministic
Ignoring non-deterministic test

... until someone can figure it out.

This code is far less important now since it is no longer used by merge.