[Plugin: Twitter Tools] incorrectly linked international hash codes

The current version of Twitter tools incorrectly links hash codes that contain international characters (üé?ê, for example).

For example, if a tweet contains “#k?ln”, the following will be saved by twitter tools:

#<a href="https://search.twitter.com/search?q=%23k" class="aktt_hashtag">k</a>?ln

which is obviously incorrect.

This is happening because the current hash code regex is:

define('AKTT_REGEX', '/\ #([a-zA-Z0-9_]{1,15})/');

By changing it to the following:

define('AKTT_REGEX', '/\ #([\w]{1,15})/u');

it would pick up on other word characters.

Cheers,
Edward