Merge with parent 1.9

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Merge with parent 1.9

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Merged parent branc

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Merged ericgazoni/openpyxl/1.9 into 1.9

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resolves #46 - update ColumnDimension and RowDimension to access styles in the same manner as Cell.

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resolves #46 - update ColumnDimension and RowDimension to access styles in the same manner as Cell.

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Merged in amorris/openpyxl/1.9 (pull request #76)

resolves #46 - update ColumnDimension and RowDimension

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Removed duplicate regex.

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Merged in amorris/openpyxl/1.9 (pull request #77)

Removed duplicate regex.

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Update docs

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