unsubscribe before retry
Unsubscribe on retry using SerialSubscription
Merge pull request #1019 from benjchristensen/retry-1018

Fix: retry() never unsubscribes from source until operator completes
[Gradle Release Plugin] - pre tag commit:  '0.17.5'.
[Gradle Release Plugin] - new version commit:  '0.17.6-SNAPSHOT'.
Version 0.17.5
isolate subscriber used for retries, cleanup tests
Benchmarking: Add JMH benchmark for ReplaySubject.
exclude tests

excluding out all tests until they stop hanging CloudBees
Restore rxjava-scala

Accidentally commented out while doing Java 8 builds (since Scala has issues with Java 8)
Fix NPE in SubjectSubscriptionManager
exclude tests

try that again
Merge pull request #1031 from benjchristensen/subject-npe

Fix NPE in SubjectSubscriptionManager
Merge pull request #1030 from daschl/subj-bench

Benchmarking: Add JMH benchmark for ReplaySubject.
Merge branch 'petermd/retry-timeout' of github.com:petermd/RxJava into retry-1027
Unit Test and Review of #1027
Merge pull request #1033 from benjchristensen/retry-1027

Manual Merge #1027