v0.8.3

• Add sort options for ls and lsticket
• Rework reading config from os environmental variables to read it always with the highest priority
• Make filename encryption optional for pgp
• Update filename encryption to have a suffix ".pgp.enc"
• Update filename encryption to embed a salt in filename
• Rename --encrypt_password to --encrypt_key
• Remove --encrypt flags for get command
• Add --decrypt* flags for get command