Merge pull request #223 from F21/master

Fix missing require() for Finder.php in redbean.inc.php
Fixed issue with MySQLWriter and booleans, Closes #222.
(cherry picked from commit adc1cc1bb1ae9ffc41538ed9cd73d5c07697212e)
Merge branch 'master' of github.com:gabordemooij/redbean
R::renameAssociation()
Refactored Duplication Manager, no longer ignores underscored tables.
Using multibyte string function closes #231.