v0.8 More granular exit codes for better status + optional Nagios output

What's new:

• Exit codes now range from OK (0), WARNING (1), CRITICAL (2) to UNKNOWN (3). Same as Nagios plugins
• Tables are produced with more consistency using github.com/olekukonko/tablewriter
• Table output now has a simple "Status" message in the end to be more clear (in addition to exit codes)
• Nagios format output, example: BA check: WARNING - OK: 5/6

v0.7: Config format change: JSON → TOML

Now used TOML as configuration format for increased usability and simplicity.

• Replaced JSON configuration format with TOML
• Restructured code around the above change to make it a little bit easier
• Replace github.com/mkideal/cli with github.com/jawher/mow.cli to make argument parsing a little bit better

Simplify + output

changes:

• option to remove spinner animation: --no-spinner
• remove need to specify config file with --config FILE, now simply use FILE

v0.5

first real version