Release candidate 8 of the 557WW 7.3.0 release This tag contains: * Add the support for JASMIN soil moisture analysis * Add the support for the OzFlux in-situ data in LVT * Add the capability to assimilate SMAP VOD * Remove SMAP(NASA) LIS DA QC check config entry; SMAP QC is always enabled * SMAP QC flag was removed for SMAP_NRTsm; SMAP QC is always enabled * The LIS SMAP reader was modified to read the SMAP L3 file with the latest Release number and largest CRID Version Number. * Have LIS write a perturbation restart file at the end time * Vegetation fraction threshold has been modified. * Fix LIS soil moisture DA QC checks for Noah-MP-4.0.1 LSM * Update remaining USAF Python tools to Python3 * Reformat USAF Python tools to conform to PEP8 * Added "AGRMET GFS filename version:" to lis.config. * Update USAF Python tools to Python3 * Reformat LDT, LIS, and LVT build tools to conform to PEP8 * Enable LDT, LIS, and LVT build tools to use either Python2 or Python3 * Added entry for GALWEM nominal resolution in kilometers. * Replaced 'SNODEP' in comments with 'USAFSI' * Updated QC for noahmp401 usafsi-da * Update QC algorithm for noahmp snow da * Restored smoothing exception list for categorical variables. * 557 post mode now uses Welford algorithm for standard deviation.