update to 1.5.16
- Remove everything following a tab (including the tab) from
hunspell dictionary lines (Resolves: rhbz#1411659)
- Delete a candidate correctly from the user database even if
it starts with a prefix to be stripped from tokens (Resolves: rhbz#1411676)
- Trigger emoji lookup when the input starts or ends with '_' or ' '
- Better handling of BackSpace and Delete when reaching the
ends of the preëdit (Resolves: rhbz#1411688)
- Search for hunspell dictionaries in a list of directories
(Resolves: https://github.com/mike-fabian/ibus-typing-booster/issues/6)