SciTools/iris — pull request #1417 by rhattersley (2014-10-26 02:41:57+00:00)
Title: Prevent arbitrary SplittableInt in lbtim.

Fixes a bug where it is possible to assign a SplittableInt with arbitrary named digit ranges to `PPField.lbtim`. For example:
```
>>> field.lbtim = SplittableInt(1234, {'foo': 0, 'bar': slice(1, None)})
>>> field.lbtim.foo
4
```