[plt-dev] Release Announcement for v4.2.1, second call

At Thu, 23 Jul 2009 20:23:31 -0400, Eli Barzilay wrote:
> [Matthew]
> * fixed problem with installation of docs in planet packages
>   (adjust planet client to handle nested planet invocations by
>   re-building the doc index only once)

 * Faster installation of Planet packages that trigger install of other
   Planet packages, because the documentation index is updated only
   once after a group of packages is installed.

> * delete/backspace issue in DrScheme/MrEd
> * identifier-prune-lexical-context (4.2.0.2)
>   syntax-local-lift-values-expression (4.2.0.3)
>   syntax-local-lift-provide
> * safe-for-space fixes for the interepreter
> * expose and support unreadable symbols
> * Various efficiency improvements to keyword arguments.
> * better interaction of HtDP languages with scheme/match

I don't think these warrant space in the announcement.