0.2.0

Two things you asked for. Nothing that existed before had to change: forms
made with earlier versions keep working as they did.

Identifiers take digits and underscores

A field identifier used to be Latin letters and nothing else. Now it starts
with a letter and goes on with letters, digits and underscores, so the usual
date_created finally fits. The first character stays a letter on purpose —
an identifier becomes both a JavaScript variable and a YAML key, and neither
of those may begin with a digit.

The date goes into the note name

{{date:FORMAT}} works everywhere placeholders work: the note name, the
folder, the note template and a field's default value. The format is
assembled from YYYY, YY, MM, DD, HH, mm and ss, so a note can
name itself 20260328232135 — fourteen digits, down to the second — or file
itself under Diary/{{date:YYYY}}/{{date:MM}} without a single field in the
form.

The name, the folder and the text are rendered from one moment in time, so a
timestamp in the name can't disagree with the same timestamp in the text when
a second happens to turn over between them.

{{today}}, {{now}} and {{datetime}} are still there — they are now the
short forms of {{date:YYYY-MM-DD}}, {{date:HH:mm}} and
{{date:YYYY-MM-DDTHH:mm}}.