Release 0.7.4 "Flesh" - Polishing and refinements

This release is mostly about polishing various aspects of the implementation to make it more convenient and more efficient. It also adds user-defined functions parsing and evaluation, pixel-manipulation commands, bit operations on binary numbers, memory operations like sto+ or incr, loading and saving BMP files, color support in the simulator, and more.

New features

• editor: Implement configurable word wrapping
• expressions: Add code for n-ary functions like sum
• expressions: Parse user-function calls like F(1;2;3;4)
• expressions: Ensure funcall objects are evaluated immediately
• functions: Add sum and product functions
• functions: Add combinations and permutations
• functions: Implement number rounding operations (rnd and trnc)
• graph: Add graphical rendering for cbrt (cube root) and xroot
• graph: Graphical rendering of combinations, permutations
• graph: Graphical rendering of sum and product
• graphics: Add pixon, pixoff and pix? commands
• graphics: Store and recall BMP files with sto and rcl
• graphics: ToGrob command converting object to graphic
• logical: Add SetBit, ClearBit and FlipBit commands
• memory: Implement the Clone (NewOb) function
• menus: Add log2 and exp2 to ExpLogMenu
• menus: Place ListMenu as a keyboard-accesisble menu
• parsing: Parse n-ary functions
• program: Add vertical program rendering mode
• stack: Display error message emitted during stack rendering
• ui: Add colorization parameters for the user interface
• ui: Add some colorization
• variables: Add Sto+, Rcl+ and other variable arithmetic
• variables: Implement Increment and Decrement

Bug fixes

• decimal: Fix precision when computing gamma/lgamma
• decimal: Fix rounding bug when rounding increases exponent
• doc: Add missing dependencies on Fedora (submitted by @vkadlcik)
• files: Do not error when opening constants/equation/library files
• files: Open only one configuration file at a time
• graphics: Fix bug drawing a line of width 0
• graphics: Use foreground color for parenthese and ratio
• lists: Separate list sum/product from regular sum/product
• renderer: Make sure printf respects target buffer size
• simulator: process double-clicks correctly (submitted by @kjellc)
• tests: Change the height of ignored header

Improvements

• command: Factor out arity for all commands
• constants: Report parse error location for invalid constants
• demo: Add HP-48 style slow walk to Walk demo
• demo: Modernize the code a little
• demo: Modify performance benchmarks to use TEval
• demo: Replace imaginary unit constant
• doc: Remove reference to Intel Decimal Library
• files: Convert all file names to lowercase (Linux support)
• functions: Make it possible to interrupt a running sum/product
• graph: Improve rendering of exp, exp2, exp10
• graphics: Separate color conversion step
• help: Do not display command name while editing
• ids: Make room for a few additional 1-byte commands
• locals: Document the absence of compiled local variables
• makefile: Add configuration files to the release .tgz file
• parsing: Make the error message for sub-expressions more local
• readme: Remove reference to DM42 from top-level readme
• simulator: Avoid crash rendering %t in recorder
• simulator: Convert simulator code to support color
• simulator: Replicate open files limitations
• simulator: Separate db50x and db48x builds
• tests: Add colorized images to testing
• tests: Avoid occasional errors on some long-running tests
• ui: Define cursor position in SelfInsert with \t
• ui: Ignore EXIT, BSP and ENTER keys when clearing error

New Contributors

• @vkadlcik made their first contribution in #858
• @kjellc made their first contribution in #856

Full Changelog: v0.7.3...v0.7.4