Merge with feature branch
JASCIS-74: Allow CEDA DI to use CIS's datetime parsing.
Merge remote-tracking branch 'remotes/origin/JASCIS-65_Multivariable_operations' into devel
JASCIS-118: Can write 8 bit integers as a NetCDF variable datatype.
JASCIS-118: Add test for writing 8-bit datatypes
JASCIS-121: Better error message if colocator missing from sample group.
JASCIS-113: Error raised if the output file is one of the input files.
JASCIS-113: Fix test failure when suite run.
JASCIS-122: Add integration tests for subsetting for all products with variable wildcarding