Merge branch 'release0.3.4' into develop
Add a pending block that indicates flow-entry's actions should be treated as an action object, not a String (refs #236).
Refactor ruby/trema/set-eth-{src,dst}-addr.rb (refs #236)
Add "Trema::" prefix to SendOutPort#to_s (refs #236)
Fixes 'Enclosing class/module ...' warnings during gem install (fixes #242).
Version bump to 0.3.5
Merge branch 'release0.3.5'