The Makefile duplication was done out of laziness; the main Makefile
should be rewritten in a similar fashion to this one to allow
per-target selection of linker script.
This is now provided by default in saturn/common.mk.
Also updates moved header names, changed bit macro names, and changes
to the common.mk build process.
This adds both a midi generator and a midi type 1 simulator.
While I would have preferred to use an existing tool for this, I found
that timidity++ does not emit pitch wheel events correctly, and I
don't know of another widely-distributed tool that does midi-to-midi
format conversion.
The c++ and python versions were co-developed. I wrote one to test the
other. There is more cleanup to do, but `roundtrip.cpp` produces a
valid type 0 midi file given a type 1 or type 0 midi file as input.
This also adds nullptr checking to decref--it seemed the functions
needing nullptr checks immediately prior to the decref call was
beginning to exceed the functions that had "implied" nullptr checking
as a part of their natural flow-control.
This adds a new overwrite_line is very useful for dealing with
cow-related boilerplate.
There is some refactoring possible (and perhaps accidental correctness
improvement) if more functions used 'overwrite_line'.
This implements the "copy" portion of copy-and-paste and the "delete"
portion of cut-and-paste.
'backspace' was also partially refactored to share code with the new
'selection_delete'.
I am excited in how expressiveness/readability improved in 'backspace'
after selection_delete was implemented.
