Breaking changes:

• Drop genClipLoader, replaced with clipToPolygonFeatures/genClipToPolygonFeatures and clipToPolygonDatasources/genClipToPolygonDatasources. Users on upgrade should look at preprocessing functions now installed with new project and borrow their code.

Other changes:

• drop global datasources from base-project. No longer included with new project.
• loadFgb: add retry on error with exponential backoff
• Deprecate getFeatures (in name) and replace with same functionality in getDatasourceFeatures. This makes it clear that this is a datasource aware function.
• getDatasourceFeatures - accept sketch option switch to use getFeaturesForSketchBBoxes
• getFeaturesForSketchBBoxes - support all geometry types and add generics support, add lower-level getFeaturesForBBoxes
• contribute squares.fgb, squares.json and update squareSketches fixtures for testing along with ascii art squaresReadme.txt for seeing the polygons to know how to use. Develop getFeaturesForSketchBBoxes e2e tests to use them.

ToDo:

• Update code and tutorials to pass type when using getFeaturesForSketchBBoxes

Resolves #386