Fix pep8 issues

Fix the binary mode after hapi.codecs changes

Fix error catching

Refactor: type hints and Exception handling

Refactor: extract static utils

Now data() endpoint returns SpeazyVariable(s)

Change 'parameters' get_data() arg to be required

Catch and check data() endpoint errors

Remove duplicated

Now provider.info() catches exceptions

Get parameters info

Test bad info request, detailed exceptions

Change 'dataset'/'id' name guessing

Add info() and status checking

Add catalog() endpoint