Write unit tests for :
- htmlconv
- chrOpen/close
- LoadTemplate $charset parameter
- if/then/else/ifempty
- 'var'
- magnet/mtype
- onformat/ondata
- onshow/onload
- sub blocks
- database calls
- extended blocks (http://www.tinybutstrong.com/manual.php#html_block_prm_extblk)
- each plugin
