Concurrency Fixes for RxRingBuffer & Merge
Merge pull request #1422 from benjchristensen/issue-1420

Concurrency Fixes for RxRingBuffer & Merge
Changed producer interface to work with long instead of int
Merge pull request #1423 from stealthcode/ProducerIntToLong

Changed producer interface to work with long instead of int
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Less variance, more type inference
Removed unnecessary variance
Forgot to undo
Removed deprecated OnSubscribeFunc
Undo comments
Copied from master
Merge pull request #1433 from Applied-Duality/async

Take 3