1) Hashtags saving method changed. Now hashtags will be attached even after creating entity from code:
$node = node_load(12);
$node->field_body['und'][0]['value'] = 'my text #hashtag';
node_save($node);
* Investigate How node autocomplete save system works and rewrite it for custom field;
* Rewrite hashtag saving according term autocomplete field;
* Fix bugs after saving/updating nodes;
* Regular expression fixed according standards on hashtags.org;
* Hashtags filter added;
* Auto attaching Hashtags filter to system input formats after installing & removing after uninstalling;
* Update.php hook for attching Hashtags filter;
* code refactoring;
* Writing updates to Readme.txt;