v0.5.4

• Updated version of prometheus, pytest, redis, texttable
• Fixed issues where the shell can crash
• Changed 'device type' in CLI to 'role'
• Added 'quit' and 'exit' aliases in the CLI
• Fixed bug where 'unknown' wasn't getting output correctly in the CLI
• Fixed multi-word args in the CLI to not use spaces
• Better help summary in the CLI
• Add OUI ethernet vendor lookups
• Add rDNS lookups
• Add '?' functionality in the CLI
• Updated the default list of fields in the CLI
• Split out role and confidence to different fields in the CLI
• Changed 'UNDEFINED' to 'NO DATA'
• Updated the CLI commands to have a more intuitive flow