implement exponential backoff for HTTP continuous _changes feed, fixes #302
disable client-level request timeout for _changes, fixes #303
Add a native webSql adapter - #63
Add opera to browsers to test against
Merge pull request #311 from daleharvey/websql-support

Add a native webSql adapter - #63
Merge pull request #307 from natevw/303-patient-replication

Disable client-level request timeout for _changes
Support opts.{key, startkey, endkey} in view queries.  Issue #315
Catch errors retrieving revisions during replication
Merge pull request #316 from jlaxson/315-support-view-filters

Support opts.{key, startkey, endkey} in view queries.  Issue #315
Merge pull request #318 from jlaxson/catch-failed-replication

Catch errors retrieving revisions during replication
add maximumWait option to continuous replication per pull request discussion (used during error handling)
Make logging configurable - #265
Make websql persist update_seq
Added tests for replication with conflicts, and included CouchDB's revision tree test suite.  Minor refactor the all_docs test.
Expand the implementation of winningRev and Pouch.merge to handle non-linear revision trees.
Merge pull request #319 from daleharvey/configurable-log

Make logging configurable - #265
Merge pull request #304 from natevw/302-changes-backoff

exponential backoff for HTTP continuous _changes feed
Merge pull request #321 from daleharvey/update_seq

Make websql persist update_seq
Merge branch 'fixed-revtree' of git://github.com/jlaxson/pouchdb into jlaxson-fixed-revtree
#325 polyfills for ie8 support