Updated conversionTest.as and conversionTest_golden.hx to
demonstrate following requirements:

1. property declarations in haxe 3 should have be:
      <property>(get, set)
   not:
      <property>(get_<property>, set_<property>)

2. Assert.areEqual, isTrue, isFalse, & assertThat are
   moving the 1st arg incorrectly into comments

nature of fix: