lein-release plugin: preparing 0.3.0 release
lein-release plugin: bumped version from 0.3.0 to 0.3.1-SNAPSHOT for next development cycle
update docs
fixed joined results won't be sent as pipeline return value
update joined stage argument type
updated tests for previous commits
lein-release plugin: preparing 0.3.1 release
lein-release plugin: bumped version from 0.3.1 to 0.3.2-SNAPSHOT for next development cycle