Log Message:
editors/tp-note: update to 1.23.1

v1.23.1
Maintenance release

This reverts the commit `72bc7f2` that had been mistakenly merged into master.

    72bc7f2 Rename the root path marker file to `tpnote.toml`

It restores the original name of the marker file: `.tpnote.toml`

v1.23.0
Merge config files / Zettelkasten support

Tp-Note is shipped with a default internal configuration that can be customized
by merging a series of configuration files from various locations into the
default values. This happens in the following order:

1. Unix and MacOS only: '`/etc/tpnote/tpnote.toml`'
2. The file where the environment variable '`TPNOTE_CONFIG`' points to.
3. The user's configuration file:
   - Unix: '`~/.config/tpnote/tpnote.toml`'
   - Windows: \ 
'`C:\Users\<LOGIN>\AppData\Roaming\tpnote\config\tpnote.toml>`'
   - MacOS: '`/Users/<LOGIN>/Library/Application Support/tpnote`'
4. At startup all parent directories of the note file path '`<PATH>`'are
   searched for a marker file named '`tpnote.toml`'. If found, the document root
   moves from '`/`' the found location. If present and its content is not empty,
   Tp-Note interprets the file's content as configuration file.
5. The file indicated by the command line parameter '`--config <FIlE>`'.

When Tp-Note starts, it first merges all available configuration files into
the default configuration. Then the resulting syntax is checked.  If not
correct, the last sourced configuration file is renamed (thus disabled) and
Tp-Note starts with its internal default configuration. For debugging, you can
print out the merge result with '`-V -b -d trace`'.

To write a custom configuration file, first start with a complete default
configuration you can generate by invoking Tp-Note with '`-V -b -c`'
(no '`-d`').

```sh
tpnote -V -b -c ~/.config/tpnote/tpnote.toml
```

Some filename and template related variables are grouped into a '`scheme`'.
The shipped configuration file lists two schemes: '`default`' and '`zettel`'.
The scheme used when creating a new note, is selected by the commend line
option '`--scheme`', the environment variable '`TPNOTE_SCHEME`' or the
configuration variable '`arg_default.scheme`'. The scheme selected when
synchronizing a Tp-Note header with its filename depends on the
value of the header variable '`scheme:`' which defaults to '`default`'
(cf. '`scheme_sync_default`').