Log Message:
editors/tp-note: update to 1.21.10

 Improve the sort-tag detection algorithm

 This release adds the optional configuration file variable
 `filename.sort_tag_separator="-"` which specifies how the sort tag is
 separated from the rest of the filename without being part of the former.
 As a result, the additional `filename.sort_tag_extra_separator="''"` is
 required less often.