* set up Doxygen
- `.gitignore`: ignore Doxygen output
- limit Doxygen search to relevant paths
- move extra `.md`s to docs/
- `Makefile`: add Doxygen target
- use as much SVG as possible for Doxygen diagrams
- alias @meme as an \xrefitem
* new github workflow: run doxygen and push to gh pages
* new system for handling vtables
* commented out non-matching JKRDisposer::~JKDisposer()
* removed artificial vtables and matched simple virtual-call functions
* better text on nonmatching functions
* reverted asmdiff.sh
* attempt 2
* Spelling
* banner and .gitignore for vtable artifacts
* move virtual function to the correct class
* remove unnecessary casts