v0.3.1

Fixes a bug with unregistered metrics not resetting as expected.

Release v0.3.0.

This release contains a few bug fixes and notably a new Prometheus style
metrics HTTP endpoint for exposing internal metrics.

v0.2.1

cut release v0.2.1

v0.2.0

cut v0.2.0 release

v0.1: Merge pull request #27 from charl/master

Minor formatting and typo changes.

0.1-pre1

update example conf