Crystal 0.35.1 support

Merge pull request #13 from TPei/update/0.35.1

Update crystal to 0.35.1

Crystal 0.35.0 support

Now uses Crystal 0.35.0

Crystal 0.34.0 support

now uses Crystal 0.34.0 for functions

Crystal 0.31.1 support

Updates Crystal OpenFaaS to Crystal 0.31.1

Crystal 0.27.0 support

Update Crystal to 0.27.0, resulting in slightly better performance

--release Functions

Better performance thanks to using the --release flag when compiling

Initial release

Develop Crystal OpenFaaS functions using this template