This adds the ability to select halos in a database-like query using yt cut regions. To facilitate this, data in the ytree format can be loaded as a yt dataset and works exactly like any particle dataset in yt. These data containers can be passed to a function that will return a generator of all TreeNode objects within the data container.
PR Checklist
[x] Code passes tests.
[x] New features are documented with docstrings and narrative docs.
PR Summary
This adds the ability to select halos in a database-like query using yt cut regions. To facilitate this, data in the ytree format can be loaded as a yt dataset and works exactly like any particle dataset in yt. These data containers can be passed to a function that will return a generator of all TreeNode objects within the data container.
PR Checklist