We assume no std* / fd* hocus-pocus

If the edited path matches certain pattern, timestamp is saved and
restored after the edit.

They are unnecessary, distracting and cause ugliness on command line.

If callable is passed, it will be called (without arguments) and
the value will be used instead.

Warning: now short for `--lines` is `-n`, not `-l`, which is taken by
`--long`.  The idea is to make it resemble `-l` in `-ls -l` (although
the real meaning for `ls` is somewhat different).

Which causes problems when our trivial loggers are used
where delay between messages cannot be predicted (e.g. testing)

htlogr::data will now sort data by keys before assembling it all into
message so that order will not differ between invocations.

Added to both Perl and Python implementations.

Not guarranteed to work back on Windows, though