Bug-14-PIL

[julietcohen]

• Integrate fix for bug outlined in issue#14 that results in an error for web tiling when a dataset with a categorical attribute is visualized.
• logging is integrated into web tiling
• include pydantic version requirement in both package setup docs
• remove requirement for install of viz-staging with version specification (for now, can easily reintegrate)
• updated version of package release in package setup