- added option "-application" to "info callable" to omit methods from base classes - extended regression test - changed naming of methodtype "system" to "builtin" - added "info methods" to migration guide
- added option "arg=.." to parameter options; this argument can be passed to converter; used currently for "type=relation" to flag, that the relation type is different from the parameter name - extended "objectparameter" to handle such cases - removed relationtypes "mixin", "filter", "instfilter" and "instmixin" since not needed due to converterArg