Support completely unaligned sentences.
Merge branch 'master' of github.com:pauldb89/cdec
Minor fixes.
Serialize data structures.
Merge branch 'master' of https://github.com/redpony/cdec
Update .gitignore.
Merge branch 'master' of https://github.com/redpony/cdec
Merge branch 'master' of https://github.com/pauldb89/cdec
Do not add empty entries in translation table for nonexistent word pairs.