Don't set "show differences" to true on case differences.

* Updated dom-text-matcher to b253923d.
* Updated annotator to f85315e3.
* On annotations anchored with non-exact matches, don't automatically
  tick the "show differences" checkbox when there are only case differences.

Fixes #690.

h/js/host.coffee

@@ -68,7 +68,7 @@ class Annotator.Host extends Annotator
   _setupXDM: ->
     # Set up the bridge plugin, which bridges the main annotation methods
     # between the host page and the panel widget.
-    whitelist = ['diffHTML', 'quote', 'ranges', 'target', 'id', 'references']
+    whitelist = ['diffHTML', 'diffCaseOnly', 'quote', 'ranges', 'target', 'id', 'references']
     this.addPlugin 'Bridge',
       origin: '*'
       window: @frame[0].contentWindow

h/js/services.coffee

@@ -145,7 +145,7 @@ class Hypothesis extends Annotator
 
     # Set up the bridge plugin, which bridges the main annotation methods
     # between the host page and the panel widget.
-    whitelist = ['diffHTML', 'quote', 'ranges', 'target', 'id', 'references']
+    whitelist = ['diffHTML', 'diffCaseOnly', 'quote', 'ranges', 'target', 'id', 'references']
     this.addPlugin 'Bridge',
       origin: $location.search().xdm
       window: $window.parent

h/lib/annotator.js

 /*
-** Annotator 1.2.6-dev-706391a
+** Annotator 1.2.6-dev-5fafbdf
 ** https://github.com/okfn/annotator/
 **
 ** Copyright 2012 Aron Carroll, Rufus Pollock, and Nick Stenning.
 ** Dual licensed under the MIT and GPLv3 licenses.
 ** https://github.com/okfn/annotator/blob/master/LICENSE
 **
-** Built at: 2013-08-06 14:03:23Z
+** Built at: 2013-08-28 00:28:44Z
 */
 
 
@@ -1117,7 +1117,8 @@
       anchor = {
         range: normalizedRange,
         quote: !match.exact ? match.found : void 0,
-        diffHTML: !match.exact ? match.comparison.diffHTML : void 0
+        diffHTML: !match.exact ? match.comparison.diffHTML : void 0,
+        diffCaseOnly: !match.exact ? match.exactExceptCase : void 0
       };
       return anchor;
     };
@@ -1152,7 +1153,8 @@
       anchor = {
         range: normalizedRange,
         quote: !match.exact ? match.found : void 0,
-        diffHTML: !match.exact ? match.comparison.diffHTML : void 0
+        diffHTML: !match.exact ? match.comparison.diffHTML : void 0,
+        diffCaseOnly: !match.exact ? match.exactExceptCase : void 0
       };
       return anchor;
     };
@@ -1216,6 +1218,7 @@
           if (anchor != null) {
             t.quote = anchor.quote || $.trim(anchor.range.text());
             t.diffHTML = anchor.diffHTML;
+            t.diffCaseOnly = anchor.diffCaseOnly;
             normedRanges.push(anchor.range);
             annotation.quote.push(t.quote);
           } else {

h/lib/dom_text_matcher.coffee

@@ -286,6 +286,11 @@ class window.DomTextMatcher
       found: found
       exact: found is expected
 
+    # If the match is not exact, check whether the changes are
+    # only case differences
+    unless result.exact then result.exactExceptCase =
+      expected.toLowerCase() is found.toLowerCase()
+
     # if we are interested in fuzzy comparison, calculate that, too
     if not result.exact and useFuzzy
       @ensureDMP()