Relocating db install/update code
Add bin files from develop
Remove references to contexts table
Introduce the wp_stream_add/update/get/delete _meta family, apply in WPDB
Add update routine, and Alter vanila DB schema
First pass at refactoring WPDB class, lots of changes to query class as well
Minor CS fixes
Merge branch 'issue-156' of github.com:x-team/wp-stream into issue-156