* In the interests of performance and expressiveness, switched to using a Sax parser instead of a DOM implementation.
* Use extensible declarative rules to control the slicing process
* Added new optional set of rules for slicing by heading, where the paragraphs underneath a heading are packed into the same tiddler as the heading
* Added a modal dialogue for specifying parameters when slicing in the browser
* Add icon for view template segment
* Muted background colour for view template segment
* Include links to parent tiddlers in the view template segment
* Fix logic for hiding/showing documents/headings (“open”/“close” were
transposed)
Instead of showing a sequence of all documents in the preview column,
we just show a single document, with a dropdown to choose which one is
shown.
The change makes it easier to deal with large numbers of documents.
The metadata for each field is in a tiddler tagged
`$:/tags/DocumentMetaData` with the field `caption` being the displayed
caption for the field and `field` being the name of the field.
`field-type` is the type of the field, and can be “string” or “list”.
Many reasons:
* to allow subtrees to be grafted more easily
* to keep the tags for an entry clean by removing structural tags and
leaving the semantic tags
* to avoid the duplication of expressing the same relationship through
both the tags and list fields
1. Switch from using the text field of lists for storing the associated
filter to using the field `toc-list-filter` (to make it harder to
accidentally parse the text of an ordinary tiddler as a filter)
2. Fix several bugs
The exclude filter `+[tag[intro]]` will produce a document that only
includes the paragraphs with the tag “intro”. These are derived from
the paragraphs in the original document with the CSS class “intro”.
* Add warning in document tiddler toolbar if tiddler already exists
* Live preview document in new window
* Fix slicer.js bug that was preventing the list field of headings from
being filled in correctly
* Rationalise some class names
