Release 0.3: Complex numbers

Bug fixes:

• CHS on second number on the command line (#105)
• program interruption when keys were pressed other than EXIT (#104)
• Rounding of 1.9999 displaying as 10.000 instead of 2.000 (#112)
• Memory corruption in logical operations on big numbers (#103, #107)
• Out of memory error when no spacing is present (#109)
• Strip trailing zeros introduced by rounding (#116, #117)
• Reject 0 SIG (displaying no significant digits)
• Potential crash in low-memory condition (#118)
• Removed useless "Program" menu in system menu (#120)
• Exit the state save/load menu after saving/loading (#122)
• Crash loading state file if no error was generated
• Detection of integer overflow in implementation of a^b (power)
• Evaluation of "ABC" 3 * was no longer working

Features:

• Complex numbers (#15)
• Render based numbers with base as subscript (#106)
• Change default spacing for fractional part to 5 digits (#108)
• Animation for long-running user programs and garbage collection (#115)
• xshift-EXIT saves state to disk (#113)
• Switch to three-level menus by default (#128)
• Generalization of pow with integer on right side
• Represent hypot and atan2 using ⊿ and ∠ operators
• Added sign function
• Change behavior of Shift-Enter (alpha), now cycles back to non-alpha

Other:

• Add keyboard cutout for tentative keyboard layout
• Vastly enhanced regression test suite (faster and more extensive)
• Fixed dependencies in Makefile for fonts
• Improved efficiency of arithmetic computations
• Added several characters to the base font
• Improve 'const'-safety in C++ code, garbage-collected pointers are const now

Signed-off-by: Christophe de Dinechin christophe@dinechin.org

Full Changelog: v0.2.4...v0.3