Add a background bitmap to the starlight theme
Fixed problem with non-shadow style tiddlers not being recognised
Fix problem with not encoding body of non-base64 data URIs
Add external link marker
Switch to using a slider for tiddler info
Remove the Unicode external link indicator

It doesn't work on several platforms, notably iOS.
Fix responsive versions of the tiddler info panel
Use a block mode reveal widget
Docs update
Fix issue with scrolling while editting long tiddlers in Firefox
Fix download saver on Firefox

Turns out that Firefox needs the link to be in the document before it
will honour the click on it.
Make a separate batch file for running tests

Makes it easier to run the tests without going through the build steps
first
Fix problem with non-shadow stylesheets not being recognised at startup
Fix typo
Add a batch file for splitting a TW file into tiddlers
Refactor the filter mechanism

Long overdue rewrite to make it simpler, and break the filter operators
out into individual modules.
Fixed typo
Fixed problem with getTextReference() not always returning a string
Fixed problem with field filter operator not performing string comparisons
Extend the filter mechanism to allow operands to be indirected through a tiddler text reference

In other words, as well as `[sort[myfield]]` to sort by the field
called `myfield`, one can do `[sort{MyTiddler}]` to sort by the field
whose name is in the text of the tiddler `MyTiddler`.