v0.9.0 / 2019-01-25

• [ENHANCEMENT] Support new pushgateway API #102
• [ENHANCEMENT] Provide more details in InvalidLabelSetError messages #89

v0.8.0 / 2018-05-04

• [FEATURE] Add increment/decrement methods to gauges
• [FEATURE] Add unregister method to registry
• [FEATURE] Support basic auth on pushgateways
• [ENHANCEMENT] Add option to set metrics prefix on collector middleware
• [ENHANCEMENT] Normalize paths with numeric IDs and UUIds
• [ENHANCEMENT] Make push client calls thread-safe
• [ENHANCEMENT] Increase precision of duration metrics in collector middleware
• [BUGFIX] Update quantile dependency to fix incorrect calculation

v0.7.1 / 2017-05-24

• [BUGFIX] Add missing _bucket suffix to histogram metrics

v0.7.0 / 2017-05-05

• [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 #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