Use YAML/TOML for config file format

[chapinb]

Is your feature request related to a problem? Please describe.
It is difficult to store complex objects in the current .ini format. Using YAML/TOML will allow easier storage

Describe the solution you'd like
Use a YAML/TOML format to specify the same features in a hierarchical format that is easy to implement and parse.

Describe alternatives you've considered
Attempted .ini formats without luck

Additional context
N/A