PyGrid 0.5.0rc2

[IonesioJunior]

Description

Updating master branch with PyGrid's latest changes.

Checklist

• [x] I have followed the Contribution Guidelines and Code of Conduct
• [x] I have commented my code following the OpenMined Styleguide
• [x] I have labeled this PR with the relevant Type labels
• [x] My changes are covered by tests

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