Add stub tests for PageSetup including marked failure: PageSetup.setup seems incomplete.

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branch : 1.8
Removed superfluous check - already happens in the loop.

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Markup seemingly contradictory behaviour of the parser.

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Reordering.

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Add a benchmark for reading files.

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Use only iterative parser: functions have to be in order.

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Delegate defaults to ColumnDimension class. Coverage might need improving.

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branch : 1.8
Loop over key, values instead of brancing where possible.

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Correct docstring and actually make the optimised version do something.

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Style tests were failing because the iterator was, of course, can only be used once. fast_parse refactored to use explicit functions and a dispatcher.
New implementation seems slightly slower than before so might revert to using an in memory object.

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branch : 1.8
Corrected wrong value.

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Add some status information.

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Refactor worksheet parsing into separate functions.
interface `fast_parse` needs refactoring away from calling code and tests.

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Make safe_iterator generally available.

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Allow tag names to be passed into the iterator.

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Use iterator on sub-elements.

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Sample data file for testing reader performance on large files.

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branch : 1.8