Better api generation

Things to consider:

• breaking changes (removed imports), so up minor version, because we are still not in 1.0

src/test/jastadd/relations/Relations.jrag

@@ -23,12 +23,11 @@ aspect NTA {
   // E ::= ... /<NT7:long>/ ... ;
   syn long E.getNT7() = 1l;
 
-// there are not Opt-NTAs like /[NT8:A]/ /[A]/
-//  // E ::= ... /[NT8:A]/ ... ;
-//  syn Opt<A> E.getNT8() = new Opt<A>();
-//
-//  // E ::= ... /[A]/ ... ;
-//  syn Opt<A> E.getA() = new Opt<A>();
+  // E ::= ... /[NT8:A]/ ... ;
+  syn Opt<A> E.getNT8Opt() = new Opt<A>();
+
+  // E ::= ... /[A]/ ... ;
+  syn Opt<A> E.getAOpt() = new Opt<A>();
 
   // E ::= ... /NT10:A*/ ... ;
   syn List<A> E.getNT10List() = new List<A>();