Merge tag 'script-exec-0.3.1' into develop

script-exec-0.3.1
Updated version for next release cycle
Update to ssh-transport 0.4.2
Add release function to the Transport protocol

The allows a transport to cleanup any resources associated with a connection.
The ssh transport uses this to evict a connection from the cache.
Updated project.clj, release notes and readme for 0.3.2
Merge branch 'release/0.3.2'