Fix Python3 incompatibility in PatternGenerator#62

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fcr wants to merge 4 commits intoholoviz-topics:masterfrom fcr:master

+11-11

Commits on Apr 5, 2020

Fix Python3 incompatibility in PatternGenerator
fcr
committed

Commits on Apr 6, 2020

Fixed two more Python 3 incompatibilities
fcr
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Commits on Nov 15, 2020

Fixed param deprecated warnings in patterngenerator
fcr
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Commits on Nov 29, 2020

Removed additional source of param warning
fcr
committed