Started at 349,880,038 allocations and 42s
- Switched to making `Symbol` in GOOS be a "fixed type", just a wrapper
around a `const char*` pointing to the string in the symbol table. This
is a step toward making a lot of things better, but by itself not a huge
improvement. Some things may be worse due to more temp `std::string`
allocations, but one day all these can be removed. On linux it saved
allocations (347,685,429), and saved a second or two (41 s).
- cache `#t` and `#f` in interpreter, better lookup for special
forms/builtins (hashtable of pointers instead of strings, vector for the
small special form list). Dropped time to 38s.
- special-case in quasiquote when splicing is the last thing in a list.
Allocation dropped to 340,603,082
- custom hash table for environment lookups (lexical vars). Dropped to
36s and 314,637,194
- less allocation in `read_list` 311,613,616. Time about the same.
- `let` and `let*` in Interpreter.cpp 191,988,083, time down to 28s.
* start cleanup
* fix typos
* fix syntax highlighting in doc
* lots of documentation updates
* clean and add tests
* more documentation and more error messages
* more document and try building kernel differently
* see if math works on windows
* add dgo
* windows debug
* windows debug 2
* one more debug try
* add extra debug print and change logic for slashes
* update
* again
* try again
* remove build game
* remove build game
* add back build-game
* remove runtime from test
* test
* reduce number of files
* go to c++ 14
* big stacks
* increase stack size again
* clean up cmake files
* add some more tests for let
* support static strings
* add function calling
* add prints for windows debgu
* one test only
* try swapping r14 and r15 in windows
* swap back
* disable defun for now
* fix massive bug
* fix formatting
