Enabled more tests, fixed more bugs.

Mainly we also needed to trim around comment tags, but also there were a bunch
of tricky edge cases that were only partially addressed. This is some edgy
business!

src/test/java/com/samskivert/mustache/MustacheTest.java

@@ -439,6 +439,11 @@ public class MustacheTest
         test("Begin.\nEnd.\n", "Begin.\n{{=@ @=}}\nEnd.\n", context());
     }
 
+    @Test public void testNoTrimNewlineFromNestedTagAt0 () {
+        test(" | \n  | \n", " | {{^boolean}}{{! comment }}\n {{/boolean}} | \n",
+             context("boolean", false));
+    }
+
     @Test public void testTrimBlank () {
         Mustache.StringSegment str = new Mustache.StringSegment("  \r\n  ", false);
         check("Text(  )-1/0", str.trimLeadBlank().toString());

src/test/java/com/samskivert/mustache/specs/SpecRunner.java

@@ -47,7 +47,7 @@ public class SpecRunner extends BlockJUnit4ClassRunner
 
     private List<FrameworkMethod> computeTests () throws InitializationError {
         String[] groups =  new String[] {
-            // "comments",
+            "comments",
             "delimiters",
             "interpolation",
             "inverted",