* Added paragraph and example about returning tuples from a filter
(Issue #859)
* Added section about manualpois
(Issue #858, Issue #869, Issue #598)
* Fixed a typo in the FAQ
* Added logging to file to the FAQ
(Issue #871)
Added faq entry about exorbitant memory usage
updated features section on the main page
Added a "what overviewer is not" section on main page
put new rendermodes on the options page
re-worded some things under the custom rendermodes section
also added a link to the faq under help on the index page
also clarified the faq entry about adding new features or changing
texture packs
also fixed a typo