Added a "fancy" flag to MultiLineComment. If set, we will use
formatting commands embedded in the text itself. The max width pop-up
and "boxed" flag will be ignored in favor of width and boxing
directives. (See issue #111.)
The current "fancy" formatter is just a placeholder that folds lines
every 10 characters.
Removed FormattedMlcCache (added two changes back). Caching the
rendered string list in the MLC itself is simpler and more efficient
than having a separate cache, and it works for Notes as well.
Added anchors for more comments in the 20090 test.
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