Allow usage of protobuf v4, drop protobuf v2 (#100)

Author: FZambia

.github/workflows/ci.yaml

@@ -10,6 +10,7 @@ jobs:
     strategy:
       matrix:
         sdk: [3.4, stable, beta] # note, not testing on 3.3 due to build_runner CI dependency problem.
+        protobuf: ["3.1.0", "4.0.0"] # make sure works with both protobuf versions.
     steps:
       - uses: actions/checkout@v4
 
@@ -20,6 +21,9 @@ jobs:
       - name: Install dependencies
         run: dart pub get
 
+      - name: Override protobuf version
+        run: dart pub add protobuf:${{ matrix.protobuf }}
+
       - name: Install coveralls
         run: sudo gem install coveralls-lcov 
 

CHANGELOG.md

@@ -1,3 +1,7 @@
+## [0.16.0]
+
+* Allow usage of protobuf v4 as dependency, drop protobuf v2
+
 ## [0.15.1]
 
 * Support Fossil delta compression, [#97](https://github.com/centrifugal/centrifuge-dart/pull/97)

pubspec.yaml

@@ -1,5 +1,5 @@
 name: centrifuge
-version: 0.15.1
+version: 0.16.0
 
 description: >
   Dart client to communicate with Centrifuge and Centrifugo from Flutter and VM
@@ -13,7 +13,7 @@ environment:
 dependencies:
   fixnum: ^1.0.0
   meta: ^1.3.0
-  protobuf: ">=2.0.0 <4.0.0"
+  protobuf: ">=3.0.0 <5.0.0"
   web_socket_channel: ">=3.0.0 <4.0.0"
 
 dev_dependencies: