Maintenance release: v3.2

[smmaurer]

This issue is to plan a maintenance release for the urbansim library.

The current release is v3.1.1 and the new one will be v3.2. I'd like to include as many pending bug fixes and compatibility updates as possible, without making any changes that would be backwards-incompatible.

As a heads-up, aspects of this library’s functionality have been replaced by other more targeted packages, which are where additional feature development is most likely to occur:

- task orchestration is now handled by Orca
- real estate development logic is now in Developer
- discrete choice logic is now in ChoiceModels
- reusable model step patterns are in UrbanSim Templates

Previously merged PR’s

These PR’s have been merged to the master branch subsequent to v3.1.1, and will be included in this release:

- PR #198 (support for exporting ordered dicts to yaml)
- PR #200 (bug fix in transition model error checking)
- PR #201 (temporarily pins Pandana at v0.3)
- PR #211 (warns if logit estimation may not have converged)

Compatibility updates

Additional updates that i think should be included in this release:

• resolve deprecation warnings (issues FutureWarning .as_matrix() > .values #215, yaml.load() deprecation warning: YAMLLoadWarning #216)
• resolve dependency incompatibilities (issues UrbanSim using outdated version of Patsy #169, urbansim using outdated version of pandana #214, Temporarily pin scipy < 1.3 #217)
• streamline CI tests and include more recent Python versions
• enable distribution on conda-forge (involves issue Remove zbox as dependency #203)

Before finalizing

• update documentation and wiki
• update version numbers

Anything else we should consider including?

[smmaurer]

Completed. See PRs #225, #226, #227.