More work on word frequency case
Merge branch 'master' of github.com:ksmandersen/CCollections

# By Ulrik Damm
# Via Ulrik Damm
* 'master' of github.com:ksmandersen/CCollections:
  fixed dictionaries
Merge branch 'master' of github.com:ksmandersen/CCollections

# By Ulrik Damm
# Via Ulrik Damm
* 'master' of github.com:ksmandersen/CCollections:
  dictionary enumerator test
  dictionary contains key
  dictionary contains key
Fixed expansion issue with set. Changed implementation of dictionary to use set for keys. Got a working word histogram.
Working word frequency histogram case