Uses JSON Go AST generated by go/parser.
Early stage.
Go v1.20 or later - make sure go/bin is in your path.
The latest version of asty, but
the code will install it for you the first time you run go2v, if
it can find go in your path.
To run the existing tests, do v test .
To attempt a new test, specify the path to the directory as well as the name of the test:
v .
./go2v untested/blockWhen a test passes, move it from untested to tests.
