Boost Processor.castValue()

[anotherpit]

Omit looking up for columnName each time the castValue() method is called.

[particlebanana]

So to clarify why this is needed: the data comes back from the database with columnNames used and we need to look at the model attributes to determine if any casting needs to be done.

Before this fix we would look up the column name for each attribute, this creates a cached mapping once to speed up the process.

Sound correct @anotherpit?

[anotherpit]

@particlebanana Exactly