changed version in preparation for initial 3.0 alpha release
remove redundant test from raw() method, fixes #334
skip MEGAM and TADM tests if MaxentClassifier is not available (when numpy is not installed)
fix an edge case with LazyCorpusLoader._unload
Fix more encoding issues (see #299)
fix snowball stemmer bug introduced by typo in #333
Merge pull request #339 from myleott/master

Bugfix for snowball stemmer typo introduced in #333
Merge branch 'master' into 2and3

Conflicts:
	nltk/stem/snowball.py