release 1.6.3

Features

• nginx: add nginx_oauth2_set_require to be used with OAuth2Require etc.
  see OpenIDC/ngx_oauth2_module#7; thanks @smanolache and @pladen
• nginx: add NGINX macros/functions for setting claim variables in the request context
  see OpenIDC/ngx_oauth2_module#7; thanks @smanolache and @pladen

Bugfixes

• allow NGINX primitives in an if block within a location block in the http block