2.1.11 release preparations

[akarnokd]

Version 2.1.11 - March 20, 2018 (Maven)

API changes

• Pull 5871: Add Flowable.concatMapCompletable{DelayError} operator.
• Pull 5870: Add Flowable.switchMapCompletable{DelayError} operator.
• Pull 5872: Add Flowable.concatMap{Maybe,Single}{DelayError} operators.
• Pull 5873: Add Flowable.switchMap{Maybe,Single}{DelayError} operators.
• Pull 5875: Add Observable switchMapX and concatMapX operators.
• Pull 5906: Add public constructor for TestScheduler that takes the initial virtual time.

Performance enhancements

• Pull 5915: Optimize Observable.concatMapCompletable.
• Pull 5918: Improve the scalar source performance of Observable.(concat|switch)Map{Completable|Single|Maybe}.
• Pull 5919: Add fusion to Observable.switchMap inner source.

Documentation changes

• Pull 5863: Expand the documentation of the Flowable.lift() operator.
• Pull 5865: Improve the JavaDoc of the other lift() operators.
• Pull 5876: Add note about NoSuchElementException to Single.zip().
• Pull 5897: Clarify dematerialize() and terminal items/signals.
• Pull 5895: Fix buffer() documentation to correctly describe onError behavior.

Bugfixes

• Pull 5887: Fix window(Observable|Callable) upstream handling.
• Pull 5888: Fix Flowable.window(Publisher|Callable) upstream handling.
• Pull 5892: Fix the extra retention problem in ReplaySubject.
• Pull 5900: Fix Observable.flatMap scalar maxConcurrency overflow.
• Pull 5893: Fix publish(-|Function) subscriber swap possible data loss.
• Pull 5898: Fix excess item retention in the other replay components.
• Pull 5904: Fix Flowable.singleOrError().toFlowable() not signalling NoSuchElementException.
• Pull 5883: Fix FlowableWindowBoundary not cancelling the upstream on a missing backpressure case, causing NullPointerException.

Other changes

• Pull 5890: Added @Nullable annotations to subjects.
• Pull 5886: Upgrade the algorithm of Observable.timeout(time|selector) operators.
• Coverage improvements
  • Pull 5883: Improve coverage and fix small mistakes/untaken paths in operators.
  • Pull 5889: Cleanup, coverage and related component fixes
  • Pull 5891: Improve coverage & related cleanup 03/05.
  • Pull 5905: Coverage improvements, logical fixes and cleanups 03/08.
  • Pull 5910: Improve coverage, fix operator logic 03/12.

[akarnokd]

Closing via v2.1.11.