v2.5.8

• Move parentheses around formula label to Presentation XML: metanorma/isodoc#606
• Refactor: move dl Presentation XML processing to be generic: metanorma/isodoc#606
• Move note delimiter processing to Presentation XML: metanorma/isodoc#606
• Move termnote delimiter processing to Presentation XML: metanorma/isodoc#606
• Refactor xrefs: metanorma/isodoc#606
• Move processing of obligation subtitle for non-resolutions to Presentation XML: metanorma/isodoc#613
• Move : after preferred term designation to Presentation XML: metanorma/isodoc#613
• Move brackets around termsource citations to Presentation XML: metanorma/isodoc#613
• Table footnote ) delimiter moved to Presentation XML: metanorma/isodoc#613