release notes

Author: Gregor Gololicic

docs/developer-updates/release-notes-v24.md

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+## ⬆️ Install or Upgrade
+
+Follow the [Flow CLI installation guide](https://docs.onflow.org/flow-cli/install/) for instructions on how to install or upgrade the CLI.
+
+## 💥 Breaking Changes
+
+### Cadence and Language Server Update
+Cadence was updated to version v0.18.0 and language server to version v0.18.2 which implements the breaking changes from flowkit library.
+
+### FlowKit API Changes
+CLI implements a flowkit utility library which can be reused in other services. This is early stage development and the API for this library was refactored and improved. 
+
+## ⭐ Features
+
+### Decode PEM Public Key
+New command for decoding PEM encoded public key. You can use the decoding command like so:
+```bash
+flow keys decode pem --from-file key.pem
+
+Public Key 		 d479b3cdc9edbddb195cb12b35161ade826b032a64bdd4062cc87fb3ba7e71c9cf646ff23990bb4532ca45c445c7e908cef278b2c4615360039a6660a366a95f 
+Signature algorithm 	 ECDSA_P256
+Revoked 		 false
+
+```
+
+## 🎉 Improvements
+
+### Validate Configuration
+Configuration validation has been improved and will provide better feedback when there are wrong values set in the `flow.json`.
+
+### Updated Cobra
+Cobra library was updated to the latest version.
+
+### Refactored Testing
+Testing suite was completely refactored and improved which will provide better code coverage and more reliable codebase.
+
+## 🐞 Bug Fixes
+
+### Refactored Event Display
+Events output on the transaction command was refactored, so it better handles special values in the events.
+
+### Flow Init Warning
+Flow init command incorrectly displayed a warning which is now removed.
+
+### Transaction IDs Output
+All commands that send transactions to the network now display that transaction ID for better visibility.
+