Builtin aliases

As well as the standard Python 3 builtin functions, Charcoal has abbreviations for some of them. These can be run with evalvar/execvar (see Operators/Commands respectively).

Abbreviation	Builtin
a	abs
b	bin
c	complex
e	enumerate
f	format
g	range
h	hex
i	__import__
m	sum
n	min
o	oct
p	repr
r	reversed
s	sorted
x	max
z	zip