CLN/ENH: Add list versions of iterator methods.

py3compat now has lrange, lzip, lmap, lreduce and lfilter, which work
like the python builtins and produce lists (to make it more clear where
looking for iterators vs. containers).

list(range(...)) --> lrange(...)
CLN/ENH: list(map(...)) --> lmap(...)
remove extra parentheses around lrange
CLN/ENH: list(zip(...)) --> lzip(...)
Put range in py3compat namespace
fixup remove lreduce stuff
TST: Add tests for list and regular iterating builtins