release-0.3

We've updated our parser to allow values to be used as expected. If you define the custom function DOT to draw a pixel you can call it directly:

 10 DOT 3,4

Previously you had to write:

   10 LET bogus=DOT 3,4

Our embedding sample does just that - writes out a PNG which was created from a BASIC program. Neat.

A small number of bugfixes and documentation cleanups complete this release.

I've now hit my 10 hour of work, so things will slow.