Merge pull request #188 from square/dimitris/stats-again

Hook up stats again
Add module which uses Pollexor to rewrite requests for Thumbor.
Fix tests
Merge pull request #191 from square/jw/pollexor-transformer

Add module which uses Pollexor to rewrite requests for Thumbor.
Use long instead of int for max cache size.
Merge pull request #192 from square/dimitris/long-size

Use long instead of int for max cache size.
Better retrying for NBH.
Fix debug indicator.
Merge pull request #194 from square/dimitris/debug-indicator-fi

Fix debug indicator.
Merge pull request #195 from square/dimitris/retry

Better retrying.
Prepare for 2.0
Merge pull request #196 from square/dimitris/change-log

Prepare for 2.0
Fix checkstyle.
Add two missing Dispatcher tests.
Return immediately if stream is null in contact photo hunter
Shutdown changelog.
avoid crash when decode WebP network stream