Convert metadata to fixed-length byte strings - #1522
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- Support loading raw data as int32 DAQ units. - When loading metadata, ensure that byte arrays are converted to strings as the starting point. These get automatically converted to / from bytestrings during HDF5 save / load. - The HKManager now excludes several large fields by default (WG / HWP encoders and ACU udp stream). - HKManager converts all byte strings to unicode on load, and then separately converts to / from bytestrings during HDF5 save / load. - Small fix to always use "so3g compatibility mode" when converting boresight Az/El to RA/DEC on load.
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Found through use of some new integration tests in `sopipetest`, PR will be opened soon with those.
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When loading context metadata or HK data into toast, convert any numpy unicode arrays into fixed-length bytes. Also add a timer around the HK loading, which is slow.
Note that this cannot be merged until hpc4cmb/toast#910 is merged and a toast tag is made.