v1.7.0

new feature: allow more notes with the same title

In case some filename template computes a filename
that exists already on the disk, Tp-Note appends
a sort tag extension, allowing to save the note
nevertheless.

v1.6.4

allow corner case: `sort_tag: ""`

v1.5.10

make `subtitle` in header optional

v1.5.8

new feature: annotate with clipboard content

v1.5.4

improve file annotation mode

* improve templates for file annotation mode:
  parse sort tag of the referenced file and
  use it as sort tag for the new note,
* rename template variables for better debugging,
* improve error messages when configuration file is not
  accessible or in case of version mismatch