[Amforth] New version: 4.3

[Matthias T. <mt...@we...>]

Hi all,

its been a long time since the last release, but you dont have to wait
any longer now.

The new release has two important changes: internally it works with
a new way to deal with the words (poorly documented however), more
important are naming changes for memory access words: e@ -> @e.

Many thanks to all who contributed with new docs and ideas

Matthias