running example not possuble, utils 0.0.2 not available

**Describe the bug**
Example depends on chatview_utils 0.0.2, on pub only 0.0.1 is available. with 0.0.1 the types are not available. Project has erros.

**To Reproduce**
Steps to reproduce the behavior:
1. git clone the repo
2. run pub get
3. get error and suggestion to change to 0.0.1
4. change to 0.0.1
5. pub get
6. see still 126 errors.

**Expected behavior**
no errors after pub get

