ikkemaniac

Message data instance types not validated when passed down in UserData -> ugly exception

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```paho.mqtt.__version__```: 1.5.1 py version: 3.9.7 When using publish.multiple() and supplying ```"retain": str("True")``` the following ugly exception will be returned: ``` Exception has occurred: TypeError unsupported operand type(s) for |: 'int'...

Add pagination classes to nav section When using `bootstrap-responsive.html` (extends `bootstrap.html`) the pagination nav section is missing the correct bootstrap classes.

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