v0.3.2: public release updates

Update to node v16.
Minor change to put statuses into their own section in the signal report.
Documentation updates in support of public release.

v0.3.1: dampening improvements

• improvements to make sure /signal/report and TCP agent responses are consistent
• added TCP agent response to /signal/report
• lowest scaling weight based on participants is now 1% instead of 10%
• 0% weight is no longer reported if it's not needed
• bugfix DRAIN_GRACE_INTERVAL was being handled as thought it was ms instead of s

v0.3.0: graceful dampening

• add two types of flap mitigations configured via HEALTH_DAMPENING_INTERVAL and DRAIN_GRACE_INTERVAL. The function of these is documented in README.md.
• add jicofoHealthy and prosodyHealthy stats to the report to indicate overall jicofo and prosody health
• add prosodyParticipants and prosodySumSquaredParticipants to the report stats
• other minor improvements and bugfixes

v0.2.0: prometheus metrics

adds METRICS option to publish prometheus metrics

v0.1.3: fix to make default config run

add CONFIG_HOST default to allow running without reconfiguration

v0.1.0: initial signal-sidecar release

Sidecar service which reports health and status of Jitsi signal node components.