* Proper coordinate rounding, as in Arond()
* Forgotten EOL now consumed if found (still optional)
* Convert unit tests images to 1-bit before comparing
* Much better unit testing script
* Add 17 test scripts from the 2019 TI-Planet and Planète Casio contest
which consisted in reproducing an image with minimum code
* Fix angle units for reverse trigonometric functions
* Add a streaming option to capture the output in real-time as a series
of bitmap images
* Switch to Decimal due to the non-continuity of Ent() breaking
assumptions about the fidelity of floats. Trigonometry functions are
still computed as floats.
* Fix the line rendering algorithm for edge cases and add a new test
line-positive.txt that ensures basic patterns are all correct.
* Use custom rules to generate text representation of decimal numbers as
to better match the output of the fx-92.
* Improve the test constants.txt to better evaluate this representation.
The interpreter automatically checks that the representation matches
the value and fails on error to avoid scratching heads.
* Fix EQUAL not being treated as a relational symbol.
There are some edge cases to Bresenham's line drawing algorithm with
cumul=dx. The fx-92 SC+ clearly checks cumul>dx, but for dx=1 and dy=1
this results in a horizontal line.
Apparently dx=dy is the only case where the fx-92 SC+ behaves
differently than cumul>dx, as seen with dx=5 dy=4 (causes cumul=dx after
2 iterations but does not trigger the condition).
Also allow the program to be interrupted with Escape while paused.
This change lays the ground for automated unit tests. It adds
command-line options to select the input language format between URL
(hexa text) and plain text, change a few output settings, and redirect
graphical output to an image.
A text lexer has also been added so that unit tests and new programs can
be written in an English-like syntax instead of raw hexadecimal.
Lephe