resolve field names using templates
split the creation of encoders and decoders using compile check for encode
added sparse full rlnc encoder + tests
waiting for kodo release
added guide on how to add new stacks, fields, and functions
fix docstrings
added guide on how to extend the kodo python bindings
updated news file
Upgrade kodo and fifi
Merge pull request #12 from steinwurf/upgrade-kodo-and-fifi

Upgrade kodo and fifi
merge
Merge pull request #13 from steinwurf/add-sparse-codes

Add sparse codes
Merge branch 'master' into add-udp-example