brittonsmith/ytree: ytree 2.2.1 Release

ytree version 2.2.1 is released!

ytree is an extension of yt for working with merger-tree data from multiple sources.

This is a bugfix release with a couple of enhancements that made some of the bugs easier to fix.

• Refactor of CatalogDataFile class.
• Simplify requirements file for docs build on readthedocs.io.

• Restore access to analysis fields for tree roots.
• Fix field access on non-root nodes when tree is not setup.
• Fix issue of uid and desc_uid fields being clobbered during initial field access.

ytree can be installed with pip:

pip install ytree

or from source, by going to https://github.com/brittonsmith/ytree

git clone https://github.com/brittonsmith/ytree
cd ytree
pip install -e .

Full documentation can be found at http://ytree.readthedocs.io/.