v0.12

Changes for firmware version V2.00(ABKN.1)C0. Works up to this firmware version.

Changelog:
-added password "encryption" for firmware version V2.00(ABKN.1)C0.
-added checkCompatibility function. Warn when the switch model/firmware isn't compatible.
-new dependency: printf (for password "encryption")
-login and logout functions: do not only check the HTTP status code, also check cookie jar
-other small changes

v0.12a

Fix for the checkCompatibility()-function.

v0.11

works up to firmware version: V2.00(ABKN.0)C0