Update versions ready to publish

Author: MatthewLM

coinlib/pubspec.yaml

@@ -2,7 +2,7 @@ name: coinlib
 description:
   A straight-forward, modular library for Peercoin and other Satoshi-based UTXO
   blockchains
-version: 3.0.0-dev
+version: 3.0.0
 repository: https://github.com/peercoin/coinlib
 
 environment:

coinlib_flutter/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 3.0.0
+
+Update to underlying coinlib 3.0.0. Contains breaking changes. Please see the
+CHANGELOG of coinlib.
+
 ## 2.2.0
 
 Update to underlying coinlib 2.2.0 with new `ECCompressedPublicKey` class.

coinlib_flutter/pubspec.yaml

@@ -2,15 +2,15 @@ name: coinlib_flutter
 description:
   A flutter wrapper for coinlib, a straight-forward, modular library for
   Peercoin and other Satoshi-based UTXO blockchains
-version: 2.2.0
+version: 3.0.0
 repository: https://github.com/peercoin/coinlib
 
 environment:
   sdk: '>=3.2.0 <4.0.0'
   flutter: ">=2.17.0"
 
 dependencies:
-  coinlib: ^2.2.0
+  coinlib: ^3.0.0
   flutter:
     sdk: flutter
   plugin_platform_interface: ^2.0.2