v1.19.0

• Add math/log-gamma to replace math/gamma, and change math/gamma to be the expected gamma function.
• Fix leaking file-descriptors in os/spawn and os/execute.
• Ctrl-C will now raise SIGINT.
• Allow quoted literals in the match macro to behave as expected in patterns.
• Fix windows net related bug for TCP servers.
• Allow evaluating ev streams with dofile.
• Fix ev related bug with operations on already closed file descriptors.
• Add struct and table agnostic getproto function.
• Add a number of functions related to structs.
• Add prototypes to structs. Structs can now inherit from other structs, just like tables.
• Create a struct with a prototype with struct/with-proto.
• Deadlocked channels will no longer exit early - instead they will hang, which is more intuitive.