Log Message:
mikutter: update to 3.7.2.

pkgsrc changes:

* drop json_pure dependency
  https://dev.mikutter.hachune.net/issues/1246

Upstream changes:

mikutter 3.7.2

* add a setting to disable extracting custom emoji
* handle a case that Twitter API returns non-URL strings as an entity
 * thanks cob odo
* unify options of remain_charcount with compose spell
 * thanks Shibafu Midorino
* stack overflow when strings which include URL are entered
 * thanks Shibafu Midorino
* import https://github.com/cobodo/photo_support_extra
 * thanks cob odo
* remain_charcount Spell
 * thanks Shibafu Midorino
* not enough height of a list in the extract tab's setting window
  in some case
 * thanks Yuto Tokunaga

Fixed several crash bugs.