multigraphite handler to send data to multiple graphite servers
MultiGraphite handler now uses multiple Graphite handlers to send data
Merge pull request #330 from yandex-load/master

MultiGraphite handler
Ensure collection isn't stopped if a collector throws an exception.
Merge pull request #332 from barnybug/master

Ensure collection isn't stopped if a collector throws an exception
Fix include_clients in PostfixCollector
Use str_to_bool instead
add connected clients metric
Add multiple instance support to mongodb collector

Users can now define a list of hosts and collector will be fetching
metrics from all of them. This is useful when you run several mongo
instances on the same host (shard server and configuration server, for
example).

The change is backwards-compatible.
Merge pull request #333 from disqus/fix-postfix

Fix include_clients in PostfixCollector
Merge pull request #335 from bclermont/openvpn_connected_clients

add connected clients metric
Merge pull request #336 from knyar/mongo-multiple-hosts-per-server

Add multiple instance support to mongodb collector
Update the version.sh script to actually build a valid version string from a tagged github archive