Added subject formatting and fixed Teams tests and try catch.
0.5.3
Fixed an error with requirements.
0.5.2
Fixed the wrong naming of the abstract class for the `Notificator`.
0.5.1
Removed Facebook notificator since the library is now [unmaintained](https://github.com/fbchat-dev/fbchat). Added feature to chose the subject/title of the message. Added tests. Doc improvement. Various fix.
0.5
Removed Facebook notificator since the library is now [unmaintained](https://github.com/fbchat-dev/fbchat). Added feature to chose the subject/title of the message. Added tests. Doc improvement. Various fix.