v0.5.0

• Add method to serialize metrics to ostream (thanks Patrick Gansterer paroga@paroga.com)
• Fix summary text format (thanks Brian Hong sungjinhong@devsisters.com)
• Add gzip compression support (thanks Gregor Jasny gjasny@googlemail.com)
• Fix Readme typos (thanks Mateusz Piotrowski 0mp@FreeBSD.org)
• lots of CMake and Bazel fixes (thanks again, Gregor Jasny gjasny@googlemail.com)

v0.4.2

• split the library into a core library and one providing ready-to-use exposers
• add basic authentication support
• add push gateway support
• remove zlib (unused)
• fix bazel build on windows
• fix GCC 4.8 compatibility

v0.4.1

• fixes a compile bug on GCC 7 introduced in v0.4

v0.4

• remove protobuf dependency (thanks to Gregor Jasny)
• fix compile errors due to missing include (thanks to Thomas Barbier and Alexandre Jacquin)
• fix uninitialized buffer compiler warnings
• use more canonical bazel workspace name (thanks to Rodrigo Queiro)
• avoid invalidating bazel caches by exposing asan as a define macro (thanks to g-easy)
• remove the JSON serializer
• compile-guard the usage of std::regex for broken standard libraries (thanks to Gregor Jasny)
• fix VS 2013 template instantiation bug (thanks Dhi Aurrahman)
• move from git_repository to http_archive repository rules (thanks Ian Sturdy)
• add Summary metric (thanks Daejiv)
• make civetweb exposer optional for people who use their own http stack (thanks Ben M. Ward)
• small performance improvements (thanks Renat Idrisov)

v0.2

• support prometheus 2.0 by exposing the official prometheus text format #9
• fixed a bug where histogram boundaries were exclusive (now inclusive) #80
• expose metric serializers as part of the public interface in order to make it easier for consumer to write custom collectors #79
• prevent multiple adds with the same label set at runtime #75

Benchmark test fixes

• fixed a small issue where metric names used in benchmarks did not conform to the newly-checked formats

Reduce number of http worker threads

• reduce the number of worker threads from 50 (civetweb default) to 2

Add metrics url path option

• add option on which url path to expose the collection api

Bugfixes

• fix GCC 6 compilation error
• add unit test for histogram builder usage

Histogram fixes

• fix cumulative counts for histograms