Merge rust-bitcoin/rust-bitcoin#3647: units: Comment alloc feature

17ca5018eb units: Comment alloc feature (Tobin C. Harding)

Pull request description:

  Add a comment to the `serde` module about why we have all the `alloc` feature gating.

  Done as part of #3556 - auditing the whole crate for use of `alloc` feature.

ACKs for top commit:
  apoelstra:
    ACK 17ca5018ebb28d5d392d61aee62170fb3e4f2a5b; successfully ran local tests

Tree-SHA512: 6d13129903a9c530db811e9f64ae4fa653dbcc952a42502c53c6c622a80c1e58b3037edd0638de78867823ca370b3a4595a08a9ec07b84c71afb6200454f5d6d
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merge-script 2024-11-25 13:32:18 +00:00
commit d54c04be00
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@ -24,7 +24,7 @@ use core::fmt;
use serde::{Deserialize, Deserializer, Serialize, Serializer}; use serde::{Deserialize, Deserializer, Serialize, Serializer};
#[cfg(feature = "alloc")] #[cfg(feature = "alloc")] // This is because `to_float_in` uses `to_string`.
use super::Denomination; use super::Denomination;
use super::{Amount, ParseAmountError, SignedAmount}; use super::{Amount, ParseAmountError, SignedAmount};