Add support for GIMMEH LINE, WORD and LETTAR.

Conflicts:
	tokenizer.c
Add tests for GIMMEH WORD and GIMMEH LINE
fix a couple compile warnings
tests for new exponentiation operator
add exponentiation (POWR OF)
run new tests
fix debug output
remove generated files
test for raising to the 0th power
fix name
handle 0^0 properly for integers; let pow() handle all float and mixed cases
fix name
do reciprocal for negative powers explicitly to catch odd cases
simplify logic, let the math work itself
fix whitespace to match
fix whitespace to match
fix readme description
Merge https://github.com/pwoolcoc/lci
Merge branch 'exponentiation' of https://github.com/markjreed/lci