v0.7.0 - [CHANGE] Rewrite Rack middlewares - Renamed middlewares to Prometheus::Middleware::* - Collector uses histogram instead of summary - Adjusted Collector metrics to adhere to our best practices - Reduced Collector label cardinality by default - See https://github.com/prometheus/client_ruby/pull/32 - [FEATURE] Add support for pushgateway deletes - [FEATURE] Allow pushing metrics via TLS - [ENHANCEMENT] Improve example application and docs - [ENHANCEMENT] Remove extra Proc allocation from metrics sync - [BUGFIX] Handle setting a gauge value to nil - [BUGFIX] Validate metric name format