While testing I found some small issues:
1. in ACP settings - Explanation for Users - make translatable the new part "spaces (will be converted to -)" and change in language file the old "default: 0-9, a-z, A-Z, min: 3, max: 30" into new "default: -, 0-9, a-z, A-Z, spaces (will be converted to -), min: 3, max: 30" (note - I guess it's new default). Not sure how hard it would be to add, but it would be great if changing option "Convert " " to "-":" would also change the "Explanation for Users" field. I mean if option "Convert " " to "-":" is set to "Yes" it will show in "Explanation for Users" the part "(will be converted to -)" and if "Convert " " to "-":" is set to "No" it will not show that part.
2. I have problem with option "Regular Expression for allowed tags". As I wrote here I would like to use in the tags all letters of my alphabet and dots. I already figured dots "\.", but I'm not able to add Czech letters. For example I tried to change the regular expression into this
/^[\-\. a-zšč0-9]{3,30}$/i
(I added there "š" and "ž" characters) and when I submit it it was changed into this: /^[\-\. a-z????0-9]{3,30}$/i
(characters I submit were changed into the question marks). I'm not sure if it is bug or if I'm adding it incorrectly, but it make the extension almost unusable, because I can't add tags in my language.