beoran/ll1: ll1 is a tool that reads in an LL(1) grammar description and checks it, and that, with the help of Go templates can generate code or reports based on those grammars. @ v0.2

Beoran b42669da95 Add end token and rule to ensure proper ending of lexing and parsing.		2 lat temu
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flexer.go	b42669da95 Add end token and rule to ensure proper ending of lexing and parsing.	2 lat temu
flexer_test.go	0b47d2829d WIP: AST, Grammar, Parser and Flexgen.	2 lat temu