Further tuning of checkstyle checks, disable HiddenField and TodoComment.
diff --git a/src/main/resources/directory-checks.xml b/src/main/resources/directory-checks.xml
index 4fd8e84..e3e0df5 100644
--- a/src/main/resources/directory-checks.xml
+++ b/src/main/resources/directory-checks.xml
@@ -145,7 +145,9 @@
 
         <!-- Checks for whitespace                               -->
         <!-- See http://checkstyle.sf.net/config_whitespace.html -->
-        <module name="EmptyForIteratorPad"/>
+        <module name="EmptyForIteratorPad">
+            <property name="option" value="space"/>
+        </module>
         <module name="MethodParamPad"/>
         <module name="NoWhitespaceAfter">
             <property name="tokens" value="BNOT, DEC, DOT, INC, LNOT, UNARY_MINUS, UNARY_PLUS"/>
@@ -190,11 +192,11 @@
         <!-- module name="AvoidInlineConditionals"/ -->
         <module name="EmptyStatement"/>
         <module name="EqualsHashCode"/>
-        <module name="HiddenField">
+        <!-- module name="HiddenField">
             <property name="ignoreSetter" value="true"/>
             <property name="ignoreConstructorParameter" value="true"/>
             <property name="setterCanReturnItsClass" value="true"/>
-        </module>
+        </module -->
         <module name="IllegalInstantiation"/>
         <module name="InnerAssignment"/>
         <!-- module name="MagicNumber"/ -->
@@ -219,7 +221,7 @@
         <!-- See http://checkstyle.sf.net/config_misc.html -->
         <module name="ArrayTypeStyle"/>
         <!-- module name="FinalParameters"/ -->
-        <module name="TodoComment"/>
+        <!-- module name="TodoComment"/ -->
         <module name="UpperEll"/>
 
     </module>