Release 0.4.4: Graphic objects, tagged objects, Undo and LastArgs

[c3d]

Notes:

• This release switches the DM42 build to "optimize for size", because
  we ran out of program space for an "optimize for speed" build.
  The DM32 build is still optimized for speed.
• The release is not really "well rounded". Notably, graphical
  rendering of stack objects is active, but not complete. Everything
  is still rendered from text, and there is no caching yet.
• The package is now consistently called DB50X for DM32 and DB48X for DM42.
  In the long run, the DB50X is expected to be more full-featured or slightly
  faster everything being equal, due to limitations in DM42 program space that
  are fast approaching.

New features:

• Graphic objects, aka grob(Graphic objects #30)
• Graphic operations: GOr, GXor, GAnd (Implement graphic operations (GAnd, GOr, GXor) #383)
• Method for graphical rendering of objects (Graphical object rendering on stack #47)
• Tagged objects, dtag and ->tag commands (Tag types #21)
• LastArg (Implement the LastArg command #379, Undo stack #55)
• Undo, i.e. last stack (Implement the 'Undo` feature #380, Undo stack #55)
• LastX (Implement the LastX command #384, Undo stack #55)

Bug fixes:

• Fix latent memory corruption bug in text constructor
• Fix out of memory error reporting while building text objects
• blitter: Fix clipping when src and dest don't have same x direction

Enhancements:

• Use the help method to select help topic (Use the help() function in Help command #378)
• Graphical rendering of stack (Accelerate user interface by caching pixmaps for what is displayed #382)
• Simulator: Fix program exit with EXIT key after another key (In simulator, EXIT does not interrupt programs #356)
• Simulator: Set 40K as default memory
• Out of program space: Switch to -Oz on DM42
• Generate different help files for DB48X and DB50X

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

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This discussion was created from the release Release 0.4.4: Graphic objects, tagged objects, Undo and LastArgs.

[c3d]

This release seems to have a relatively serious bug, see #386. If you are concerned about stability, I would not recommend using it just yet.