Exported IN-PLUGIN-PACKAGE
Fixed stupid mistake which made REQUIRE-PLUGIN to only load dependencies
Added two new keywords to DEFPLUGIN: :use and :provide
Changed IN-PLUGIN-PACKAGE to macro
Removed IN-PLUGIN-PACKAGE because IN-PACKAGE is able to handle this
1.3.0

NEW:
- Two new keywords for DEFPLUGIN: :use and :provide

REMOVED:
- IN-PLUGIN-PACKAGE because of it wrong behaviour