028a0d6558 Remove conversion impl macro for `Magic`/`Network` (rustaceanrob)
Pull request description:
Closes#4560 (or at least one way to close it)
Handle the coversion of new networks directly in the `From` and `TryFrom` implementations, as new networks are added infrequently.
ACKs for top commit:
tcharding:
ACK 028a0d6558
apoelstra:
ACK 028a0d6558129f554de8c4247481bc0ad80f1c27; successfully ran local tests
Tree-SHA512: 07b768e229305878849f23e54d3fb4940a736ce44122950e4f4bf68ddeb4f82f2d35020840e8176bd7b562726e46055650ba6de8559bae7559c881b64a437169