Leiden+ syntax update

This release includes several new processors for broader Leiden+ support, as well as some bugfixes to old ones. The new processors are listed below, linked to the corresponding sections on http://papyri.info

Special characters

1. Paragraphos: ----

Marginalia

1. Text inserted / added above line: \ὅλων/
2. Text added between lines: ||interlin: ὧν||

Other editorial conventions

1. Handshift: $m4

Extras (Not yet on papyri.info)

1. Diples:

   To get this PN preview: (diple)
   Use this Leiden+: ((diple))
   <milestone rend="diple" unit="undefined"/>
   

2. Eisthesis (indentation):

   To get this PN preview: line in eisthesis
   Use this Leiden+: (1, indent)
   To create this XML: <lb n="1" rend="indent"/>