Patch release with some rather urgent fixes, especially the problem with widows 10 update/installer that has manifested lately after a recent Windows 10 upate (1891).

• 1882 to be tested ⇒ Rechnungserstellung mit “Vorlage benutzen” funktioniert nicht immer
• 1886 to be tested ⇒ Warnung “Datum in der Zukunft” erscheint für heutiges Datum
• 1887 to be tested ⇒ Waiting room entry dialog closes unexpectedly when typing digit in Note field
• 1891 to be tested ⇒ Probleme bei Update / Neuinstallation von GECAMed auf Windows 10

Not planned yet (guess: end of April 2017).

• 1880 to be tested ⇒ Modify Invoice Templates to use Codes instead of hard linking Rates
• 1883 to be tested ⇒ Enhance debugging/logging output of the ruleengine
• 1885 to be tested ⇒ Include global and user settings in PDF report (Help→ About→ Save info)
• 1892 to be tested ⇒ Disallow creating Antecedents without shortcut