patreon update (Patreon)

patreon switched to a subscription style 
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Billing schedule

Patrons are charged on the day they join your membership, and then monthly on that same date. For example, if a patron joins on the 10th, they’ll be charged on that day, and then monthly on the 10th. All patrons who joined before your switch to subscription billing continue to be charged on the 1st of each month.
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so people will not be double charged sweeet