Merge branch 'release/2.1'

expath-pkg.xml

 <?xml version="1.0" encoding="UTF-8"?>
-<package xmlns="http://expath.org/ns/pkg" name="http://textgrid.de/ns/SADE" abbrev="SADE" version="2.0.0" spec="1.0">
+<package xmlns="http://expath.org/ns/pkg" name="http://textgrid.de/ns/SADE" abbrev="SADE" version="2.1" spec="1.0">
     <title>Scalable Architecture for Digital Editions powered by TextGrid</title>
     <dependency package="http://exist-db.org/apps/markdown"/>
     <dependency package="http://exist-db.org/apps/monex"/>