Update README.md
fix bug in intiizling active learning, add zope.interface to requirements
Changelog and Contributor files
clean up singleton code
Merge branch 'master' into development
path issue
path issue
path issue
changing sampe size
Revert "path issue"

This reverts commit b06620ed081462daa1ac8bb4e7f72231d1258abe.
Revert "Revert "path issue""

This reverts commit 2decf4320a407f2d46033843420199d68fb06bed.
Revert "changing sampe size"

This reverts commit 4f284090929008ed927034a91111a7e03809b1e1.
full run
Merge pull request #172 from open-city/development

Development Branch
Update README.md
update documentation
path
upcase standard files
comment fix
add zope.interface and zope.index to install_requires