mass refactor, all still WIP
install influxdb in travis
fix Hash#select for 1.8.7
announce to hipchat
flag influxdb records as non-updatable
refactored data set/get, fixed influxdb basic filter
simple query chaining on influxdb
simplify
moved more common code to filter base module
remove commented-out code
diff support for influxdb filter
fix chaining for #exists?
associations now use backend rather than direct redis calls
typos
generic association support, influx assocs working

Still very WIP; InfluxDB query support is unlikely to work
beyond what there are currently tests for.
time series per record, simplifies implementation
fixes for 1.8.7
fix influxdb query escapes, record deletion
port some fixes from master
bugfixes