New features:
* feat: update README links to new docs by Alejandro-Morales in https://github.com/fetchai/uAgents/pull/200
* refactor: to make exchange adapter by ejfitzgerald in https://github.com/fetchai/uAgents/pull/199
* feat: add wallet messaging by jrriehl in https://github.com/fetchai/uAgents/pull/53
**Full Changelog**: https://github.com/fetchai/uAgents/compare/v0.8.1...v0.9.0