Migrate ROOT I/O to uproot

This PR closes #1200 (closed) by re-implementing the ROOT-format input/output routines for Table and subclasses to use uproot. This is a much lighter library that is available on all platforms and doesn't require a working ROOT installation.

This should be API compatible, since everything is under-the-hood, but there are likely small differences that may trip up users who use ROOT I/O heavily - I don't actually know of anyone doing that.

added gwpy.table + 1 deleted label

assigned to @duncanmmacleod

Created by: pep8speaks

Hello @duncanmmacleod! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

There are currently no PEP 8 issues detected in this Pull Request. Cheers!

Comment last updated at 2020-08-13 11:39:45 UTC

added dep:uproot label

requested review from @ghost

Created by: alurban

Review: Approved

LGTM and this is a positive change, thanks @duncanmmacleod (and @dcorre for the suggestion)

Merged by: duncanmmacleod at 2020-08-26 14:38:33 UTC

merged manually

closed