Improve error messages and docstrings for bilby read function
The purpose of this MR is to improve the error messages and docstrings for the bilby read function. This fixes issue #254.
Maintenance will be performed on git.ligo.org, containers.ligo.org, and docs.ligo.org on Tuesday 19 May 2026 starting at approximately 900 PDT (1600 UTC). It is expected to take around 30 minutes and there will be several periods of downtime throughout the maintenance. Please address any comments, concerns, or questions to the helpdesk.
The purpose of this MR is to improve the error messages and docstrings for the bilby read function. This fixes issue #254.