Merge pull request #409 from vivliostyle/support_word-break_break-word

Add support for `break-word` value of `word-break` property

CHANGELOG.md

@@ -15,6 +15,9 @@
 - Support `column-fill` property
   - <https://github.com/vivliostyle/vivliostyle.js/pull/387>
   - Spec: [CSS Multi-column Layout Module Level 1 - column-fill](https://drafts.csswg.org/css-multicol/#cf)
+- Add support for `break-word` value of `word-break` property
+  - <https://github.com/vivliostyle/vivliostyle.js/pull/409>
+  - Spec: [CSS Text Module Level 3 - Breaking Rules for Letters: the word-break property](https://www.w3.org/TR/css-text-3/#word-break-property)
 
 ### Changed
 

resources/validation.txt

@@ -335,7 +335,7 @@ overflow-wrap = normal | break-word;
 [moz]tab-size = NNEG_INT | NNEG_LENGTH;
 [moz,ms]text-align-last = auto | start | end | left | right | center | justify;
 [ms]text-justify = auto | none | inter-word | inter-character | inter-ideograph /* specified in UA stylesheet for IE */;
-[ms]word-break = normal | keep-all | break-all;
+[ms]word-break = normal | keep-all | break-all | break-word;
 [ms]word-wrap = normal | break-word;
 
 /* CSS Text Decoration */