Release 1.1.1 CHANGES.md preparation

[akarnokd]

Preparation for release 1.1.1.

There are, however, quite a few PRs open which could be also included with 1.1.1 (ignoring documentation and cleanup):

Bugfixes

• 1.x: fix counted buffer and window operators' backpressure behavior #3597 fix counted buffer and window operators' backpressure behavior
• 1.x: just() now supports backpressure (+ related fixes/changes) #3614 just() now supports backpressure (+ related fixes/changes) merged
• 1.x: Fix NPE in CompositeException when nested throws on initCause #3620 Fix NPE in CompositeException when nested throws on initCause

Enhancements

• 1.x: overhead reduction for merge and flatMap #3476 overhead reduction for merge and flatMap
• 1.x: combineLatest can now combine arbitrary number of sources #3507 combineLatest can now combine arbitrary number of sources
• 1.x: fix observeOn resource handling, add delayError capability #3544 fix observeOn resource handling, add delayError capability
• 1.x: No more need to convert Singles to Observables for Single.zip() #3579 No more need to convert Singles to Observables for Single.zip() merged
• 1.x: concat reduce overhead when streaming a source #3589 concat reduce overhead when streaming a source
• 1.x: Added MergeDelay operators for Iterable of Observables #3627 Added MergeDelay operators for Iterable of Observables

[stevegury]

👍

[akarnokd]

It's a bit tedious the repost this all the time. Instead, I've created a draft release and once decided, will copy the final markdown from there to a new PR.