Key Error Updating Logger

[moohax]

Branch: develop/1.1

self.cf_options[k]["previous"].append(self.cf_options[k]["current"])
KeyError: 'previous'

caused by logger options not having a previous key,

counterfit/counterfit/core/options.py

Line 27 in ff4f3c7

"docs": "Logger to log queries with"

Fix:

"logger": {
    "default": "basic",
    "current": "basic",
    "previous": [],
    "docs": "Logger to log queries with"
}