stable 1.2 with the latest hotfixes

1.2.1 -- Hot-fix of Gradle DSL

• removed unnecessary parameters from aspectj-extension class;
• fixed gradle dsl-model;

1.2.0 -- Binary weaving

• plugin now supports processing .class files;
• supporting jvm languages — Kotlin, Groovy, Scala;
• updated internal aj-tools and aj runtime to the newest 1.8.9;