Handling of double hyphen
There are double hyphens encoded within the edition xml: ⹀
, unicode code point 11840 (2e40), see also wikipedia.
Fonts "EB GaramondARCHITRAVE" and "ModernAntiqua" seem to support the symbol at least on Linux and Windows and iOS.
There was code in the app replacing the double hyphen with an equal sign. This shouldn't be necessary (anymore) and I removed it. The double hyphens are now shown as entered in the xml. Also note that <lb ... type="doubleHyphen">
now behaves the same as a normal <lb>
.