9f7449b572 Use from_int_btc function for const context (yancy)
f93e67977a Add from_int_btc function to Amount (yancy)
Pull request description:
Followup PR from https://github.com/rust-bitcoin/rust-bitcoin/pull/1811
Added a `const` associated function `from_int_btc()` for Amount. `panic()` in const context is only available after 1.57+ so a work around is provided.
ACKs for top commit:
tcharding:
ACK 9f7449b572
apoelstra:
ACK 9f7449b572
Tree-SHA512: 7755234f2e573577d754f0224083cb7acc059e58833790fe344b0d9bad0acd89b0f74054d9efcba2133576222c7e9ab8dc3d81ddc10fbdcd4f83638d697118c4