change flow stats actions to new constructor format
Fix bugs of simple-router
Fix bugs of simple-router.rb
Remove to_s method from SendOutPort class.
Merge pull request #231 from nickkaranatsios/fix_actions

change flow stats actions to new constructor format
Fixes broken SendOutPort#to_s and its spec.
Fixes broken SetEthSrcAddr#to_s and its spec.
Fixes broken SetEthDstAddr#to_s and its spec.
Version bump to 0.3.0
Merge branch 'release0.3.0' into develop
Adds src/**/*.rb to reek's source_files list
Updated roodi's target file list.
fix build warning on 64bit env.

- fix warnings
- add "-Werror" into ruby/extconf.rb
Updated flog's target-file list.
Merge branch 'develop' of https://github.com/trema/trema into develop
Updated flay's target-file list.
Deletes unused yard:* tasks
Add some comments to Rakefile
Add code quality checker