Update README.md
Bump MaxVersion to 20.*
Set WEBDRIVERS only conditionally.
Import sub-modules.
Bump version to 0.4.1
Update README.md
Slight textual changes as per official spec.
Fix validation to allow years up to 2015.
Disable sig-enable checkbox.
Bump copyright year.
Bump version to 0.4.2
fixes bug #22
fixes bug #22 (thanks for commenting on my previous attempt to fix bug #22)
Merge pull request #23 from joachimneu/master

Correctly restore checkboxes, closes #22
Change Elster IP addresses, closes #25
Trigger change event on #jahr after initial autofill, fixes #26
Merge pull request #1 from stesie/master

Upstream updates including support for the year 2013 (until 2015)