Allows history to enforce to return minimum number of events for a given type - #56

from ring_doorbell import Ring
myring = Ring('user', 'password')
doorbell = myring.doorbells[0]


# showing all my last 3 events captured by the camera
[z.get('kind') for z in doorbell.history(limit=3)]
['motion', 'motion', 'motion']

# no events were listed because it looked up the last 3 events which are motion not kind
[z.get('kind') for z in doorbell.history(limit=3, kind='ding')]
[] 

# however it can be enforced now with this PR
[z.get('kind') for z in doorbell.history(limit=3, kind='ding', enforce_limit=True)]
['ding', 'ding', 'ding']

# it is also possible to determine how many times the query will be executed until the limit is reached
[z.get('kind') for z in doorbell.history(limit=3, kind='ding', enforce_limit=True, retry=1)]
WARNING:ring_doorbell.doorbot:Could not find total of 3 of kind ding
[]

[z.get('kind') for z in doorbell.history(limit=3, kind='ding', enforce_limit=True, retry=4)]
WARNING:ring_doorbell.doorbot:Could not find total of 3 of kind ding
['ding', 'ding']

[z.get('kind') for z in doorbell.history(limit=3, kind='ding', enforce_limit=True, retry=8)]
['ding', 'ding', 'ding']