Merge #256: chore: bump dev version to 2.1.0-alpha.0

9dff4e8 chore: bump dev version to 2.1.0-alpha.0 (valued mammal)

Pull request description:

  PR to update the master dev version to 2.1.0-alpha.0.

  ### Checklists

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)

ACKs for top commit:
  notmandatory:
    ACK 9dff4e8
  thunderbiscuit:
    ACK 9dff4e8.
  oleonardolima:
    ACK 9dff4e8

Tree-SHA512: e21f18dc436b78801af080bc57dbb6d77402a1092fda108ca2713614a56eaa868878f846210239161012aad2bcb4b400b5c9dfc15a25aa28ed5fcba1654653be

Author: ValuedMammal

wallet/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "bdk_wallet"
 homepage = "https://bitcoindevkit.org"
-version = "2.0.0"
+version = "2.1.0-alpha.0"
 repository = "https://github.com/bitcoindevkit/bdk_wallet"
 documentation = "https://docs.rs/bdk_wallet"
 description = "A modern, lightweight, descriptor-based wallet library"