This is blocking rust-miniscript, which is blocking elements-miniscript, which is blocking rust-simplicity.

If all these are stuck waiting for @stevenroose then we need another solution.

I have spent some time switching from rust-bitcoincore-rpc to jsonrpc. It is quite annoying since I basically have to reimplement get_new_address, get_balance, get_block_count, etc., to get the unit tests to build.

I can keep going implementing all the "basic" functionality like this, but probably not things like get_blockchain_info which change from version to version, and which rust-bitcoincorerpc would traditionally smooth over. So downstream users would have a much less ergonomic library.

Should I continue in this vein or should we do something else?

removed draft status, using a fork of bitcoincore-rpc with rust-bitcoin 0.30

#117

Also, should remove "draft" from this PR description.