bdk 0.29.0

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### Description

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### Notes to the reviewers

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### Changelog notice

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### Checklists

#### All Submissions:

* [ ] I've signed all my commits
* [ ] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
* [ ] I ran `cargo fmt` and `cargo clippy` before committing

#### New Features:

* [ ] I've added tests for the new feature
* [ ] I've added docs for the new feature

#### Bugfixes:

* [ ] This pull request breaks the existing API
* [ ] I've added tests to reproduce the issue which are now passing
* [ ] I'm linking the issue being fixed by this PR