Release 0.5.1 "Talents": More RPL commands

[c3d]

This release focuses on rounding up various useful RPL commands and bringing RPL a bit closer to feature-complete.

New features:

• Portable bit pattern generation commands, gray and rgb (Portable color pattern generation commands #617)
• Add support for packed bitmaps (Packed grobs in native format #555)
• Implement RPL case statement, extended with case when (Implement case statement #374)
• Beep command (Beep function #50)
• List→ command (Implement List→ #573)
• Size command (Implement Size command #588)
• Str→ command (Implement Str→ #590)
• Obj→ command (Implement Obj→ #596)
• Add flag to control if 0^0 returns 1 or undefined behaviour (Discussion about 0^0 being 1 or undefined #598)
• Unicode-based Num and Chr commands, Text→Code and Code→Text (Add commands to build text to and from Unicode #597)
• IP and FP commands (Implement IP and FP commands #601)
• Percentage operations %, %CH and %T (Implement %, %CH and %T commands #602)
• Min and Max operations (Implement'min and max commands #603)
• Floor and Ceil operations (Implement FLOOR and CEIL #605)
• Get with a name argument (The Get command does not work with a name #609)
• Put command (Names in VariablesMenu are not properly centered #610)
• Head and Tail commands (List head and tail #614)
• Map, Reduce and Filter commands (Commands for map, reduce and filter commands #613)

Bug fixes:

• Ensure rounded rectangles stay within their boundaries (Rounded rectangles draw outside of the given boundaries #618)
• Prevent auto-power-off for long-running programs (Program cannot be interrupted after a few minutes #587)
• Fix old-style RPL shortcuts for FS?C and the like
• Add FF shortcut for FlipFlag
• Fix rendering of <, >, etc in old-style RPL compatibility mode (Tests like TestLT show incorrectly in old-RPL mode #595)
• Update various menus
• Evaluate program arguments in IFT and IFTE (The IFT and IFTE instructions should evaluate program arguments #592)
• Evaluate algebraic expressions in if, while and case (Evaluate algebraic expressions in IF, WHILE, etc. #593)
• Load variables from state file in correct order (State file variables are reversed when loaded #591)
• Avoid truncation of state file when ASCII conversions occur (Missing characters when conversions happen loading state file #589)
• Clear debugging state more completely after kill (Program re-enters single-stepping even after Kill #600)
• Wait no longer makes it harder to stop a program (The Wait command should allow programs to be interrupted #619)
• mod no longer gives wrong result for negative fractions and bignums (mod is broken for fractions and bignum #606)
• No longer strip tags in non-numeric arithmetic operations (Adding a tagged object to a list strips the tag #607)

Improvements:

• Small updates to demo file
• A long Wait command allows the calculator to switch off (The Wait command should let the calculator power off #620)
• Centering of variable names in VariablesMenu (Names in VariablesMenu are not properly centered #610)
• Makefile check-ids target to check if commands are in help or menus (Makefile: Add check-ids target #615)

Full Changelog: v0.5.0...v0.5.1

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