4.2-RC1

Bugfixes:

• Fixes a bug where some strings where not translated. #207
• Fixes a bug where meta data went missing for duplicate posts created by the Rewrite & Republish feature. Props to @ocean90. #192
• Fixes a bug where the plugin would not initialize if installed via composer. #182

Other:

• Replaces Mailchimp with MailBlue newsletter integration. #206
• Improved compatibility for PHP 8.0. #174
• Improved sort order of the taxonomies list on the options page. #162
• Most plugin files have been renamed. If you extend this plugin of include any of the files from the plugin from within your own plugin, you may need to adjust the file name used in the include/require statement. #156

Non user facing:

• Bug fix in test #201
• Code quality #200
• Update CI #199
• Update dev tools #198
• Updates test configuration #196
• Update dev tools #195
• Set tested up to version to 5.8 #187
• add config to composer.json need for packagist #180
• Push to yoast-dist on travis task #178
• Improve validity of the tests #173
• Improve tests #172
• Safeguard compatibility with PHP 8 #170
• Improve test suite #168
• Improve test suite #167
• Improve test suite #165
• Code quality #164
• Improve test suite #163
• Improve test suite #161
• Improve test suite #160
• Improve test suite #159
• Improve CI #158
• Code consistency and code quality #157
• Remove dead code #155
• Code consistency #154
• Code consistency #153
• Security hardening #152
• Security hardening #151
• Security hardening #150
• Code consistency #149
• Code consistency #148
• Code style consistency #147
• Code quality #146
• Code style consistency #145
• Improve CI setup #144
• Improve CI setup #143
• Improve dev tooling #142
• Project documentation #141
• Code quality #140
• Code quality #139
• Code quality #138
• Code style consistency #137
• Code style consistency #136
• Code quality #135
• Code quality #134
• Code style consistency #133
• Code quality #132
• Code style consistency #131
• Code style consistency #130
• Code quality #129
• Code style consistency #128
• Code style consistency #127
• Code quality #126
• Code style consistency #125
• Code style consistency #124
• Code style consistency #123
• Code modernization #122
• Code quality #121
• Code style consistency #120
• Code quality #119
• Code style consistency #118
• Improve (flexibility of) dev environment #117
• Refactors the Metabox class. #116