Seemingly arbitrary restriction on hole size for doughnut charts
*Created originally on Bitbucket by [not_a_seagull](https://bitbucket.org/%7B6ac9f3ed-e187-43aa-98ac-31cf4781ecb9%7D/)*
While opening an excel spreadsheet that contained a doughnut chart, I received an error stating that the file could not be opened because the minimum value for the hole size of the doughnut chart was 10%. For context, the file I was attempting to open had a doughnut chart with a hole size of 5%.
I looked into the code and I found this code in the “pie\_chart.py” file in the “charts” directory.
`holeSize = NestedMinMax(min=10, max=90, allow_none=True)`
I was able to simply change it to the following:
`holeSize = NestedMinMax(min=5, max=90, allow_none=True)`
I would recommend that a similar change is reflected in the main repo, as the restriction on the hole size seems somewhat arbitrary.
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