Flask-Parameter-Validation v2.2.0

Thanks all for using the library. Below are the changes since the last release.
Features:

• Allow passing functions as validators (commit by Garcel)
• Allow datetime inputs with validation (commit) (commit by d3-steichman)
• Automatic API Documentation (PR by d3-steichman)
• Allow aliased inputs (PR by summersz)

Bug fixes:

• Fix issue where non-JSON payloads would error (commit by Charlie-Mindified)
• Fix issue where file inputs would fail without length checks (PR by borisowww)
• Allow list inputs on Query, File and Form (PR by summersz)
• Fix issue where forms did not have type conversion (PR by summersz)
• Fix issue where async functions would crash (PR by summersz)