0.39.0

• Add variadic --ops-file / -o flag support to interpolate, configure-product and configure-director commands - via @calebwashburn
• Update --vars-file short flag for configure-product to be consistent with others (-l) - via @genevieve
• Add support for OM_USERNAME and OM_PASSWORD environment variables on configure-authentication command - @genevieve
• Update placeholders in config-template command to be consistent with placeholders in other commands like staged-config - via @kcboyle and @fredwangwang
• Add variadic --product-name / -n flag to apply-changes to support selective deploys - via @zmb3
• Add ability to configure errand states via the config file used in the configure-product command - via @calebwashburn
• Make create-vm-extension idempotent - via @calebwashburn
• Add --config / -c flag to configure VM extensions using a .yml config file with the create-vm-extension command - via @calebwashburn
• Add --include-placeholder and --include-credentials flags to the staged-director-config command - via @fredwangwang and @kcboyle
• Add global --env / -e flag to configure om for a given environment using a .yml file - via @kcboyle and @fredwangwang
• Add --format to specific commands that use it and remove global --format flag (breaking change) - via @genevieve and @chendrix
• Add om tile-metadata command to extract product name and version from tile file - via @chendrix and @davidderiso
• Improve performance of upload-product command - via @fredwangwang and @ljfranklin