Improves text filters, styles and mail merge.
Fixes
- Text filters
- RTF import: Wrong table cell background color.
- RTF import: Bulleted list with wrong bullet characters.
- HTML import: Current HTTP headers cause win32 function "InternetOpen" to stall with certain web servers.
- SubTextParts (= MergeBlocks) are extended whenever a document is saved and loaded in DOCX.
- DOCX import: Document causes 01-1D02 error.
- MailMerge
- The MailMerge class discards form fields when loading a template.
- Styles
- Backgroundcolor of Paragraphstyle is not exported in DOCX format.
- Very rare System.AccessViolationException on loading a specific document.