What's Changed

• The taint mechanism will be deprecated in Ruby 2.7 by @kamipo in https://github.com/brianmario/mysql2/pull/1083
• Made argument types strict for ruby 2.7 by @nobu in https://github.com/brianmario/mysql2/pull/1096
• Update rake (and rake-compiler) to suppress the warning. by @junaruga in https://github.com/brianmario/mysql2/pull/1099
• Fix crash if a Mysql2::Client object is allocated but never connected by @sodabrew in https://github.com/brianmario/mysql2/pull/1101
• Remove Enumerable include from Statement class by @adamcrown in https://github.com/brianmario/mysql2/pull/1104
• Add project metadata to the gemspec by @orien in https://github.com/brianmario/mysql2/pull/1089
• Don't call mysql_close if mysql_init wasn't called. by @fimmtiu in https://github.com/brianmario/mysql2/pull/1111
• Client session tracking by @insom in https://github.com/brianmario/mysql2/pull/1092
• Avoid a hash object allocation per each query/execute call by @kamipo in https://github.com/brianmario/mysql2/pull/1112
• Implementing type reflection from mysql result by @danhuynhdev in https://github.com/brianmario/mysql2/pull/1068
• Register C global variables to Ruby GC to avoid problems with GC.compact by @casperisfine in https://github.com/brianmario/mysql2/pull/1115
• Clarify Rails 4.2.11 support in Readme by @muzfuz in https://github.com/brianmario/mysql2/pull/1131
• Improve Homebrew compatibility by @stefansundin in https://github.com/brianmario/mysql2/pull/1135
• Tiny README syntax markup for consistency by @fwolfst in https://github.com/brianmario/mysql2/pull/1164
• Add GitHub Actions. by @junaruga in https://github.com/brianmario/mysql2/pull/1154
• Run GC.verify_compaction_references on CI by @casperisfine in https://github.com/brianmario/mysql2/pull/1155
• GitHub Actions: Add CentOS/Fedora cases. by @junaruga in https://github.com/brianmario/mysql2/pull/1168
• Random SEGV in do_send_query() by @unak in https://github.com/brianmario/mysql2/pull/1150
• GitHub Actions: Add macOS cases. by @junaruga in https://github.com/brianmario/mysql2/pull/1170
• Add GitHub Actions badges. by @junaruga in https://github.com/brianmario/mysql2/pull/1172
• Rename .travis_* files to ci/*. by @junaruga in https://github.com/brianmario/mysql2/pull/1171
• Make the benchmarks group optional. by @junaruga in https://github.com/brianmario/mysql2/pull/1173
• Verify the testing database before running tests. by @junaruga in https://github.com/brianmario/mysql2/pull/1174
• Rename the before/after hooks's symbol on RSpec 2 to the one on RSpec 3. by @junaruga in https://github.com/brianmario/mysql2/pull/1177
• Refactor CI yaml files by @junaruga in https://github.com/brianmario/mysql2/pull/1176
• Fix test failures on MariaDB by @junaruga in https://github.com/brianmario/mysql2/pull/1193
• Fix some typos [ci skip] by @kamipo in https://github.com/brianmario/mysql2/pull/1195
• Travis: Remove the command to pin Rubygems. by @junaruga in https://github.com/brianmario/mysql2/pull/1188
• Make Result#fields return interned strings in Ruby 3+ by @casperisfine in https://github.com/brianmario/mysql2/pull/1181
• Can't enable SSL with MariaDB driver library. (#1182) by @vakuum in https://github.com/brianmario/mysql2/pull/1183
• Fix broken URL [ci skip] by @gaurish in https://github.com/brianmario/mysql2/pull/1207
• Dynamically set Homebrew-installed OpenSSL flag by @olivierlacan in https://github.com/brianmario/mysql2/pull/1204
• Setup default CA path if not provided by @dbussink in https://github.com/brianmario/mysql2/pull/1206
• Allow setting VERIFY_IDENTITY for MariaDB by @dbussink in https://github.com/brianmario/mysql2/pull/1205
• Fix session tracking tests by @insom in https://github.com/brianmario/mysql2/pull/1222
• Update Mysql2::Result spec for Ruby 3.1 by @casperisfine in https://github.com/brianmario/mysql2/pull/1219
• Update DATETIME casting tests for mysql 8.0 by @casperisfine in https://github.com/brianmario/mysql2/pull/1221
• Fix syntax by @tenderlove in https://github.com/brianmario/mysql2/pull/1223
• Fix more builds by @tenderlove in https://github.com/brianmario/mysql2/pull/1224
• Fix a mismatching size warning by @casperisfine in https://github.com/brianmario/mysql2/pull/1227
• Move rubocop to a separate CI job by @casperisfine in https://github.com/brianmario/mysql2/pull/1225
• improve ConnectionError mapping by @ThomasSevestre in https://github.com/brianmario/mysql2/pull/1215
• Undefine T_DATA allocators for Ruby 3.2 compatibility by @casperisfine in https://github.com/brianmario/mysql2/pull/1236
• Add Ruby 3.1 to the CI matrix by @casperisfine in https://github.com/brianmario/mysql2/pull/1235
• Fix to build with MySQL 5.1 by @arika in https://github.com/brianmario/mysql2/pull/1197
• fix typo in README by @nealharris in https://github.com/brianmario/mysql2/pull/1247
• Add signing key for MySQL 5.7.37 / 8.0.28 and higher by @sodabrew in https://github.com/brianmario/mysql2/pull/1254
• Remove ubuntu-16.04 from workflows by @mishina2228 in https://github.com/brianmario/mysql2/pull/1257
• Update GitHub Actions workflows by @mishina2228 in https://github.com/brianmario/mysql2/pull/1253

New Contributors

• @nobu made their first contribution in https://github.com/brianmario/mysql2/pull/1096
• @adamcrown made their first contribution in https://github.com/brianmario/mysql2/pull/1104
• @orien made their first contribution in https://github.com/brianmario/mysql2/pull/1089
• @fimmtiu made their first contribution in https://github.com/brianmario/mysql2/pull/1111
• @insom made their first contribution in https://github.com/brianmario/mysql2/pull/1092
• @danhuynhdev made their first contribution in https://github.com/brianmario/mysql2/pull/1068
• @muzfuz made their first contribution in https://github.com/brianmario/mysql2/pull/1131
• @stefansundin made their first contribution in https://github.com/brianmario/mysql2/pull/1135
• @fwolfst made their first contribution in https://github.com/brianmario/mysql2/pull/1164
• @unak made their first contribution in https://github.com/brianmario/mysql2/pull/1150
• @vakuum made their first contribution in https://github.com/brianmario/mysql2/pull/1183
• @olivierlacan made their first contribution in https://github.com/brianmario/mysql2/pull/1204
• @tenderlove made their first contribution in https://github.com/brianmario/mysql2/pull/1223
• @ThomasSevestre made their first contribution in https://github.com/brianmario/mysql2/pull/1215
• @arika made their first contribution in https://github.com/brianmario/mysql2/pull/1197
• @nealharris made their first contribution in https://github.com/brianmario/mysql2/pull/1247
• @mishina2228 made their first contribution in https://github.com/brianmario/mysql2/pull/1257

Full Changelog: https://github.com/brianmario/mysql2/compare/0.5.3...0.5.4