Enhancement suggestion - define clear interface with mixins

[khalilj]

In cases the mixins expects some values (properties) from the consumer model, there should be a clear interface with the mixin.

I suggest to add block properties block to the mixin structure, these properties are merged to consumer model.

com.github.odavid.maven.plugins mixin-maven-plugin my.group my.artifact my.ver mixin value1 value2