Release v0.11.4

A prototype web application for the online edition of the Anton Webern Gesamtausgabe, located at the Department of Musicology of the University of Basel. It is written in Angular and runs on edition.anton-webern.ch.

Changes since last release: https://github.com/webern-unibas-ch/awg-app/blob/v0.11.4/CHANGELOG.md