Update changelog to include full v3.0.0 release notes.

CHANGELOG.md

@@ -1,18 +1,44 @@
 # v3.0.0
 
-<!-- Release notes generated using configuration in .github/release.yml at release/v3.0.0 -->
+<!-- Release notes generated using configuration in .github/release.yml at 3.0.0 **WITH MANUAL EDITING AFTERWARD** -->
 
 ## What's Changed
 
+> ⚠️ **WARNING:** This release is a new major version with breaking changes from the v2.X.X series. For help migrating from v2 releases, see the file `v2_TO_v3_MIGRATION_GUIDE.md`.
+
+### Breaking Changes
+
+- Convert algod responses to typed by @Eric-Warehime in https://github.com/algorand/js-algorand-sdk/pull/776
+- Align transaction fields to transaction reference spec by @algochoi in https://github.com/algorand/js-algorand-sdk/pull/804
+- TEAL Source Map: Improve SourceMap and support columns by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/834
+- Remove `IntDecoding` as a REST option & support native bigint types in models by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/852
+- Refactor `Transaction` class by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/854
+- Improve object encoding and decoding by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/862
+- Correctly model blocks by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/875
+- Fix stateproof txn representation by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/876
+- Typed indexer responses by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/857
+- Support special case raw binary strings by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/878
+- REST API TEAL bytes fix by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/881
+- Fix remaining REST untyped responses by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/882
+
+### Enhancements
+
+- Remove buffer usage in favor or Uint8Array and Dataview by @algochoi in https://github.com/algorand/js-algorand-sdk/pull/800
+- Remove `Buffer` Usage by @algochoi in https://github.com/algorand/js-algorand-sdk/pull/801
+- Add address bytes length check in encodeAddress by @algochoi in https://github.com/algorand/js-algorand-sdk/pull/809
+- Native esm bundle by @PhearZero in https://github.com/algorand/js-algorand-sdk/pull/836
+- Add ability to pass through fetch options by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/883
+- REST API: Allow bigints for client args by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/893
+
 ### Bugfixes
 
 - Fix: Don't delete `dist` folder when creating release PR by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/890
 - Release PR Generation: Use prerelease tag in changelog generation by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/892
 
-### Enhancements
+### Other
 
+- Type and formatting changes by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/853
 - 3.0.0: Sync changes to develop by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/884
-- REST API: Allow bigints for client args by @jasonpaulos in https://github.com/algorand/js-algorand-sdk/pull/893
 
 **Full Changelog**: https://github.com/algorand/js-algorand-sdk/compare/v2.9.0...v3.0.0