safeguard list head and tail access
add in travis.yml
add in -y flags to the travis yml
try the make install route for travis
close_enough
clip geometries to the bounds
blend modes
travis
remove printf
remove printf
Merge branch 'master' of github.com:propublica/simple-tiles
memoize array lengths
add in blend demo
add in a simple refcount system prototype, not ready yet
getting closer on refcounting
removed error_t and moved it's members to be heap allocated, but there are still pointer errors
swap the inc/dec
snprintf - 1, ugh
asprintf have to add in free calls
add in error_msg free to core objects