Plus42 Equations, Preview Release

[Thomas Okken]

New update:

1. Moving programs could leave the current program pointer in an invalid state, leading to various unpleasant situations. Fixed.
2. SHOW improvements.
3. Minor bug fixes.
4. The HP / Unicode character conversion now supports an escape notation for those parts of the HP-42S character set that don't have unambiguous Unicode equivalents. The notation consist of a euro sign followed by two hexadecimal digits. Plus42 will use this notation when converting character codes >= 132 (but not 138) to Unicode, and will accept it for all character codes when converting from Unicode.
5. Fixed NORM and TRACE behavior of INPUT.

(4 and 5 will also be in the next Free42 release.)