2.2.2

• bugfix: make null and boolean php values to API compatible

2.2.1

• bugfix: null and empty values not sent while updating

2.2.0

• read error code from the CallException via getCode()

New GetTeacherDetails request available

2.1.0

GetTeacherDetails request unit test

2.0.0

Update README.md

First major release

1.0.0

Additional checks adde