[css-text-3] Writing-system dependent adjustments to line breaking are at risk

Closes w3c#4445

Author: frivoal

css-text-3/Overview.bs

@@ -27,6 +27,7 @@ At Risk: the 'text-justify' property
 At Risk: the percentage values of 'word-spacing'
 At Risk: the 'hanging-punctuation' property
 At Risk: the ''line-break/anywhere'' value of the 'line-break' property
+At Risk: Writing-system specific adjustments to line-breaking
 Ignored Vars: letter-spacing
 Status Text: This publication partially addresses the issues in the <a href="https://drafts.csswg.org/css-text-3/issues-lc-2013">disposition of comments</a> since the <a href="https://www.w3.org/TR/2013/WD-css-text-3-20131010/">October 2013 Last Call Working Draft</a>, and, while a marked improvement over the previous draft, is not considered to be entirely up-to-date at the time of publication. A completed dispostion of comments and corresponding draft will be published once the issues are fully addressed and reviewed by the CSSWG and Internationalization WG.
 WPT Path Prefix: /css/css-text/