0.6.0

• adopt semver
• removal of kafkamdam and nsq input plugin (though nsq as clustering bus is still supported)
• move http api/listener configuration to new section
• removal of /get endpoint which is no longer used
• use /node instead of /api, contains more info
• huge refactor of api code
• big refactor of input plugin code (#376)
• include notifier type in notifier metrics
• switch default policy to tokenaware,hostpool-epsilon-greedy (#374)
• optimize CI runs, add benchmarks to CI, optimize chunk totalPoints tracking (#385, #386)
• support listening on https
• idx fixes wrt persistence and memory structures getting out of sync when trying to add bad metrics (#398)