upgrade to version 0.27. alignment with xotcl-core 0.38 (use cr_item.name instead of cr_revisions.title), change page_title to title (potential incompatibility) to rely more strictly to the CR data model (most files are effected).
upgrade to 0.18, support for text/enhanced, nicer links for pages, import and export of pages (export file can be used for import; use this e.g. for transfer pages to a different package instance or to a different oacs installation)