This needs reviewing by someone who knows about NumPy-Ice array conversions

…g a single recarray from the values and dtypes of each column in one go, instead of each co

lumn creating its own numpy.array

AbstractColumn.__init__ uses properties such as self.name which aren't always set at initialisation, especially when Ice is involved. This commit removes self.recarrtype and replaces it with just the properties that should exist (based on testing since its unclear under what circumstances Ice will set a property or not).

Mask creation and test functions also put into separate functions for reuse within test.

Test for a array column of size 1.
Test all possible column types in the same table.

Now that array columns seem to be working I can start to clean things up.

This replaces the need for a separate variable to indicate initialisation

This makes things logically nicer (new stuff goes at the end of the table)

Also moved HDF5 upload from class initialiser to the actual test method. This should make things easier if addition test files for future versions are needed.

…Table

The OriginalFile ID is useful for compatibility tests, as it allows the underlying file to be manually retrieved