Improvements to GWF reading
This PR introduces two enhancements to the TimeSeries.read()
functionality for GWF input
- added the
format
kwarg to thetimeseries.io.cache.read_cache
method, allowing the frame library readers to call back to the cache reader when a user specifiesnproc > 1
- re-enabled auto-identification of GWF files, the order of library imports means frameCPP will be used by default for GWF reading