0.20.3:
Add legal information to be used by serendipity_event_dsgvo_gpdr

0.20.2:
remove recaptcha v1 (deprecated and switched off 2018-03-31)
change description for recaptcha v2

0.20.1:
document changes reflecting google ownership

0.20:
new experimental support for google recaptcha v2

0.10:
update bundled version