Improve reg-refs extraction: allow reg-refs of structure 1343-04-12/19, allow dot as separator between reg-refs
Merge branch 'master' of https://github.com/itsjeyd/sbr-regesten
Merge branch 'master' of https://github.com/itsjeyd/sbr-regesten
Expand DocStrings + minor syntactic changes to increase readability
Add first version of chapter on index.
Add Package float.