Fix implement inherited abstract methods (#162)

test/validations/shouldHaveBody.wlk

@@ -0,0 +1,9 @@
+object shouldHaveBody {
+  @Expect(code="shouldHaveBody", level="error")
+  method noBody()
+}
+
+const o = object {
+  @Expect(code="shouldHaveBody", level="error")
+  method noBody()
+}

test/validations/shouldImplementInheritedAbstractMethods.wlk

@@ -0,0 +1,41 @@
+// abstract class
+class A {
+	method abstractBlah()
+}
+
+@Expect(code="shouldImplementInheritedAbstractMethods", level="error")
+object anA inherits A {
+}
+
+class B inherits A {
+	method otherAbstract(one, two)
+}
+
+@Expect(code="shouldImplementInheritedAbstractMethods", level="error")
+object aB inherits B {}
+
+
+class Animal {
+	var property nombre
+}
+
+object ornitorrinco inherits Animal(nombre = "julian") {} 
+
+const o = @Expect(code="shouldImplementInheritedAbstractMethods", level="error") object inherits A {}
+
+const o3 = @Expect(code="shouldImplementInheritedAbstractMethods", level="error") object inherits B {}
+
+const o4 = object inherits Animal(nombre = "firulais") {} 
+
+class C {
+  method abstractBlah(someParam)
+}
+
+@Expect(code="shouldImplementInheritedAbstractMethods", level="error")
+object aC inherits C {
+  method abstractBlah() {}
+}
+
+const unnamedAC = @Expect(code="shouldImplementInheritedAbstractMethods", level="error") object inherits C {
+  method abstractBlah() {}
+}