spec - specification for the Crowbar C replacement

Age	Commit message (Expand)	Author	Lines
2020-11-03	don't need a separate thing for assignment target	Melody Horn	-3/+3
2020-11-03	add the last couple statement types	Melody Horn	-0/+25
2020-11-03	stub out assignment statements	Melody Horn	-0/+16
2020-11-02	add empty statement	Melody Horn	-0/+10
2020-11-02	add flow control statements	Melody Horn	-0/+39
2020-11-02	add loops	Melody Horn	-1/+41
2020-11-02	define switch statement	Melody Horn	-1/+21
2020-11-02	define compile-time vs runtime behavior	Melody Horn	-0/+68