make more consistent 0/1 instead of occasional -1
not actually off-by-one; stack has one more space than it needs
add more to stack
debug stuff in tests
ht tests
add file pointers to print functions
fp defaults to stdout in stack print too
update todo
fix broken build
fix broken test

Always initialize variables to avoid running into undefined behavior.
cleanup

Keep the 2n+1 logic in a single place.
Make it more clear that the new_ local vars are to guard against the error
condition of running out of memory. (Wish we could write a test for that!)
update to http url
https, not http
wow i need to check on typos
syntax not the same
reuse CFLAGS, so all the same mode. remove -static since OS X cannot do static (super easily).
update todo
update to http url
https, not http
wow i need to check on typos