| ⇢ | A | NullConnection added |
| ⇢ | C | NullConnection::setReceive() added | |
| ⇢ | A | NullConnection::send() added | |
| ⇢ | A | NullConnection::connect() added | |
| ⇢ | A | NullConnection::disconnect() added | |
| ⇢ | A | NullConnection::upgrade() added | |
| ⇢ | A | NullConnection::timeout() added | |
| ⇢ | A | NullConnection::getMetaData() added | |
| ⇢ | A | NullConnection::receive() added | |
| ⇢ | A | NullConnection::addListener() added | |
| C | ↘ | D | ClientFactory::fromString() got worse |