Resolve "register library module(s) correctly"

Closes #5

See merge request !9

allow to depend on namespace resolution of the packages modules

closes #5

Resolve "whitespace handling"

Closes #3

See merge request !8

nodes consisting of only a single whitespace can occur and thus may not be purged

closes #3

Move to gitlab flow

See merge request !7

the development package is continously deployed to the exist repo as a development package; release
packages are deployed on a merge to the production branch

`prepare` builds the xar file depending on the branch; `publish` uploads to the exist repo

provides local, develop (master) and production environments

Spaced out

Minor fixes

See merge request !5

Bugfix for tei:row

Fix typo in tei:row handling

See merge request !4

Add editorial notes section for split XML

Closes bdn-SADE#45

See merge request !3

First fully productive version