Draft proposal
Merge remote-tracking branch 'upstream/master'

Conflicts:
	report/proposal/proposal.tex
Feature extractors for budget and release dates
Merge pull request #8 from beets/master

Feature extractors for budget and release dates
Merge pull request #9 from maxwxzheng/master

Scikit learn runner
Add feature combinators

These take the output of feature extractors and combine them into more
features.

Also added a feature extractor that bucketizes movie budgets.
Turn feature combinators on by default
Merge pull request #10 from beets/master

Add feature combinators
Add the code to drop uncommon features