many improvements such as:
1. The i++ and i-- operators are now implemented. Note: the variable is a
label and must appear in column 1.
2. +=, -=, *=, /=, %=, <<=, >>=, &=, |=, and ^= have all been implemented.
additional processor support and more.
Also, many bug fixes. See the ChangeLog in the distfile for a complete list
of changes (quite long).