* @input@ placeholder can be used to reference the given input (useful
  to create a new namespace) makes #70 obsolete
* new ? syntax to overwrite config options from the syntax (defaults
  still come from the config setting)
* support for strftime placeholders in the namespace config. Allows to
  create a daily page for example
* New option autopage which hides the input field. Together with the new
  date placeholder this allows to create a daily page on a single button
  click

Options are not used after the handler step, so no need to assign them
to the class member.

This should also catch copy'n'paste actions.

https://caniuse.com/#feat=input-event

# Conflicts:
#	syntax.php

Fixes #66

UNTESTED adaptation of commit 9785b7d
to the new preg_match()-based parser.

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#	syntax.php

# Conflicts:
#	syntax.php

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#	syntax.php

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In commit 22d9c07

Regression introduced by incorrect implementation of newpagevars in
commit 0d90564 when porting #66 - It
should be a string, not an array.

The regex for newpagetemplate parameters parsing that was implemented in
commit 0d90564 included the leading `#`
in the newpagevars parameter, preventing the newpagetemplate plugin from
processing the first parameter as `#@param@` would not match the
expected `@PARAM@`.

Adapting the regex accordingly.

# Conflicts:
#	plugin.info.txt
#	syntax.php