new: rdists and criteria
gitignore
rdists: much work
UCB rewrite and tests
criteria refactoring renaming
criteria docs typo
clearer implementation of EI_empirical
Merge pull request #187 from jaberg/tree3

new: rdists and criteria
eps for logEI_gaussian
cut debugprint
comments for branin domain
fix ascii encoded file
added branin test cases for tpe and anneal
new: slightly less-dumb expr_to_config function
Trials.best_trial must have STATUS_OK

Conflicts:
	hyperopt/base.py
fix: missing break clause from FMinIter
new: mix.suggest
small pyll speed optimizations
logEI_gaussian avoids div-by-0 after underfow
anneal skip domain assertion for quantized distributions