rust-bitcoin dep has wrong version #312
Description
We have a bitcoin dep pulled in by rust-elements at version 0.32.0. But the actual minimum is 0.32.2 (anything lower won't work with rust-elements). We should bump our minimum version to 0.32.2.
Having said this, why do we depend on bitcoin separately for interop with elements? Can't we just use the rust-bitcoin reexport from rust-elements?
The elements/bitcoin dependency was added in b2e9fb6 in #249 for the sake of Weight. We may want to just wait for bitcoin-units 1.0 to resolve this, which will unify the Weight type between rust-bitcoin and rust-elements.