0.2.0 Centrifugal

ipyforcegraph 0.2.0

• raise minimum python from 3.7 to 3.8
• improve types and add py.typed file
• adds background_color (defaults to transparent, encoded as rgba(0, 0, 0, 0.0))
• adds GraphData which can capture the as-simulated data from the browser
• adds LinkSelection which mirrors NodeSelection, but returns link indices in
  .source.links, as they are not guaranteed to have a an id column
• adds LinkWidths
• adds NodeSizes
• adds most of the browser's Math functions and constants to the environment made
  available to .template values
• adds GraphForces, which exposes a large number of the forces from [d3-force-3d]
• renames the top-level graph imports ipyforcegraph.graphs (was ipyforcegraph.forcegraph)
• the DataFrameSource, and its new subclass WidgetSource, can be imported from ipyforcegraph.sources

@jupyrdf/jupyter-forcegraph 0.2.0

• implements bidirectional serialization of zstd-compressed dataframes
• updates TypeScript target to es2018
• update to 3d-force-graph 1.71.1
• update to force-graph 1.43.0