Previously `send_all` was particularly confusing, because when used on a
`create_tx` it implied two things:
- spend everything that's in the wallet (if no utxos are specified)
- don't create a change output
But when used on a `bump_fee` it only meant to not add a change output
and instead reduce the only existing output to increase the fee.
This has now been split into two separate options that should hopefully
make it more clear to use, as described in #142.
Additionally, `TxBuilder` now has a "context", that basically allows to
make some flags available only when they are actually meaningful, either
for `create_tx` or `bump_fee`.
Closes#142.
This makes it possible to choose a UTXO manually without having to
choose them *all* manually. I introduced the `manually_selected_only`
option to enforce that only manually selected utxos can be used.
To stop the cli semantics changing I made the `utxos` keep the old
behaviour by calling `manually_selected_only`.
