Version 2.1.0

• Use snake_case for support functions and put them under a namespace [#59]
• Prefix functions in global namespace [#58]
• Add CODEOWNERS file [#57]
• Remove unneeded framework files [#56]
• Adapt variable names to move from camelCase to snake_case [#55]
• Use strict comparisons [#54]
• Wrap Behat & PHPUnit bootstrapping code into a function [#53]
• PHPCS: fix up the code base [10] - rename a local variable [#52]
• Move PHP 5.4 tests from WP_VERSION latest to 5.1 [#50]
• Send SIGTERM before sending SIGKILL [#47]
• PHPCS: fix up the code base [8] - assignments in conditions [#45]
• Create a WP_CLI_CS standard for PHP_CodeSniffer [#44]
• PHPCS: fix up the code base [9] - assignments in conditions [#43]
• PHPCS: fix up the code base [7] - multi-line function calls [#42]
• PHPCS: fix up the code base [6] - multi-line function calls [#41]
• PHPCS: fix up the code base [5] - yoda conditions [#40]
• PHPCS: fix up the code base [4] - strict comparisons [#39]
• PHPCS: fix up the code base [3] - scope modifiers [#38]
• PHPCS: fix up the code base [2] - object instantiation [#37]
• PHPCS: fix up the code base [1] - whitespace [#36]