- updated to version 0.5.4
* The taint mechanism will be deprecated in Ruby 2.7 by @kamipo in #1083
* Made argument types strict for ruby 2.7 by @nobu in #1096
* Update rake (and rake-compiler) to suppress the warning. by @junaruga in #1099
* Fix crash if a Mysql2::Client object is allocated but never connected by @sodabrew in #1101
* Remove Enumerable include from Statement class by @adamcrown in #1104
* Add project metadata to the gemspec by @orien in #1089
* Don't call mysql_close if mysql_init wasn't called. by @fimmtiu in #1111
* Client session tracking by @insom in #1092
* Avoid a hash object allocation per each query/execute call by @kamipo in #1112
* Implementing type reflection from mysql result by @danhuynhdev in #1068
* Register C global variables to Ruby GC to avoid problems with GC.compact by @casperisfine in #1115
* Clarify Rails 4.2.11 support in Readme by @muzfuz in #1131
* Improve Homebrew compatibility by @stefansundin in #1135
* Tiny README syntax markup for consistency by @fwolfst in #1164
* Add GitHub Actions. by @junaruga in #1154
* Run GC.verify_compaction_references on CI by @casperisfine in #1155
* GitHub Actions: Add CentOS/Fedora cases. by @junaruga in #1168
* Random SEGV in do_send_query() by @unak in #1150
* GitHub Actions: Add macOS cases. by @junaruga in #1170
* Add GitHub Actions badges. by @junaruga in #1172
* Rename .travis_* files to ci/*. by @junaruga in #1171
* Make the benchmarks group optional. by @junaruga in #1173
* Verify the testing database before running tests. by @junaruga in #1174
* Rename the before/after hooks's symbol on RSpec 2 to the one on RSpec 3. by @junaruga in #1177
* Refactor CI yaml files by @junaruga in #1176
* Fix test failures on MariaDB by @junaruga in #1193
* Fix some typos [ci skip] by @kamipo in #1195
* Travis: Remove the command to pin Rubygems. by @junaruga in #1188
* Make Result#fields return interned strings in Ruby 3+ by @casperisfine in #1181