Use types in selects

[reckart]

Is your feature request related to a problem? Please describe.
From the UIMA Java SDK, I am used to obtaining a type from the type system and then being able to use that type in select invocations. However, in cassis, the select methods only accept type names, not actual type objects.

Describe the solution you'd like
It would be nice if this would work:

Token = typesystem.getType("my.Token")
cas.select(Token)