Prometheus-client

[FEATURE] Added ASGI application (512)
[FEATURE] Add support for parsing timestamps in Prometheus exposition format. (483)
[FEATURE] Add target_info to registries (453)
[ENHANCEMENT] Handle empty and slashes in label values for pushgateway (547 442)
[ENHANCEMENT] Various updates for latest OpenMetrics draft spec (434 445 538 460 496)
[ENHANCEMENT] Add `HELP` output for auto-created metrics (471)
[ENHANCEMENT] Use mmap.PAGESIZE constant as value for first read. (505)
[ENHANCEMENT] Add `__repr__` method to metric objects, make them debug friendly. (481)
[ENHANCEMENT] Add observability check to metrics (455 520)
[BUGFIX] Fix urlparse in python >= 3.7.6 (497)
[BUGFIX] Cleaning up name before appending unit on name (543)
[BUGFIX] Allow for OSError on Google App Engine (448)

[BUGFIX] multiprocess: don't crash on missing gauge_live/sum files (424)
[BUGFIX] correctly bind method on Python 2.x (403)

[ENHANCEMENT] Multiprocess exposition speed boost (421)
[ENHANCEMENT] optimize openmetrics text parsing (~4x perf) (402)
[ENHANCEMENT] Add python3.7 support (418)
[ENHANCEMENT] Change exemplar length limit to be only for label names+values (397)
[BUGFIX] Disable gcCollector for pypy (380)

[ENHANCEMENT] Better exceptions on exposition failure (364)
[BUGFIX] Fix deadlock in gcCollector, metrics are now different (371)
[BUGFIX] Fix thread leak in Python 3.7 (356)
[BUGFIX] Make the format strings compatible with Python 2.6 (361)
[BUGFIX] parser: ensure samples are of type Sample (358)

[ENHANCEMENT] Be more resilient to certain file corruptions (329)
[ENHANCEMENT] Permit subclassing of MetricsHandler (339)
[ENHANCEMENT] Updates based on latest OpenMetrics draft spec discussions (338 346)
[BUGFIX] In multiprocess mode, ensure that metrics initialise to the correct file (346)
[BUGFIX] Avoid re-entrant calls to GC collector's callback (343)

[BUGFIX] Disable GCCollector in multiprocess mode to prevent a deadlock