Fix post filtering via dropdown - issue #838
Allow for WP bug #23268

Ref: http://codex.wordpress.org/Class_Reference/WP_Query#Custom_Field_Parameters
Ref: http://core.trac.wordpress.org/ticket/23268
Keyword density preg_quote fix
whitespace
Submodule update
Fix PHP notice + typo in docs
Merge pull request #841 from jrfnl/Issue-838-post-filtering

Fix post filtering via dropdown - issue #838
Merge pull request #842 from jrfnl/Double-check-meta-queries

Allow for WP bug #23268
Merge pull request #848 from jrfnl/Keyword-density-preg-fix

Keyword density preg_quote fix
Merge branch 'master' of git://github.com/Yoast/wordpress-seo into Issue-849-PHP-notice
Bump to version 1.5.2.3
Make sure version specific upgrades won't be run unnecessarily
Merge branch 'master' of git://github.com/Yoast/wordpress-seo into Issue-849-PHP-notice
rem period in help menu

none of the others have one. sorry it was bugging me. . . . .no moar periods!
rem help menu header periods

more periods removal
Fix clean up conversion routine for breadcrumb maintax/pt
Fix issue #864 - work-around wrong verification key input
Updated readme with fix info
Merge pull request #862 from chuckreynolds/patch-1

rem period in help menu
Merge pull request #855 from jrfnl/Fix-version-nr-confusion

Make sure version specific upgrades won't be run unnecessarily