CHANGELOG for Zebra 1.0.0-alpha.14 (#2538)

* Draft CHANGELOG for Zebra 1.0.0-alpha.14

* Add PR #2533 to CHANGELOG

* Apply suggestions from code review

Co-authored-by: teor <teor@riseup.net>

* Remove entry about updating the changelog

* move #2497

* add #2529

* Add a missing space

* Add #2458, #2525, #2486, #2542 and  #2539 to CHANGELOG

Co-authored-by: teor <teor@riseup.net>
Co-authored-by: Deirdre Connolly <deirdre@zfnd.org>

CHANGELOG.md

@@ -4,6 +4,48 @@ All notable changes to Zebra will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org).
 
+## [Zebra 1.0.0-alpha.14](https://github.com/ZcashFoundation/zebra/releases/tag/v1.0.0-alpha.14) - _TODO:Add actual release date_
+
+Zebra's latest alpha continues our work on NU5, including Orchard and Transaction V5.
+
+### Added
+
+- Reject UTXO double spends (#2511)
+- Add a ValueBalance type (#2505)
+- Implement Sum for Amount (#2500)
+- Add an OrderedUtxo type for transparent spend validation (#2502)
+- Pass the finalized state to chain contextual validation (#2503)
+- Calculate incremental note commitment trees (#2407)
+- Reject duplicate Sapling and Orchard nullifiers (#2497)
+- Add `proptest-impl` feature to `zebra-state` crate to help simplify tests(#2529)
+- Track anchors and note commitment trees (#2458)
+- Validate spends of transparent coinbase outputs (#2525)
+- Calculate the remaining value in the transparent transaction value pool (#2486)
+
+#### Documentation
+
+- Add value pools design to book summary (#2520)
+
+#### Testing
+
+- Test consensus-critical Amount deserialization (#2487)
+- Update to use new GitHub action names in Google Cloud workflows (#2533)
+- Add test intialization helper function for tests (#2539)
+
+### Changed
+
+- Decrease the number of randomised test cases in zebra-state (#2521, #2513)
+- Make nullifier tests consistent with UTXO tests (#2513)
+
+#### Testing
+
+ - Disable Rust beta tests in CI, due to a Rust bug (#2542)
+
+### Fixed
+
+- Clarify a variable name and check for overflow in new_ordered_outputs (#2510)
+- Update Orchard keys, hashes, and note commitments to match Zcash test vectors (#2445)
+
 ## [Zebra 1.0.0-alpha.13](https://github.com/ZcashFoundation/zebra/releases/tag/v1.0.0-alpha.13) - 2021-07-15
 
 Zebra's latest alpha continues our work on NU5, including Orchard and Transaction V5. New validation