[css-values-4] Publication nits, and added newest published version.

Author: tabatkins

css-values-4/Overview.bs

@@ -7,6 +7,7 @@ Status: ED
 Work Status: Exploring
 ED: https://drafts.csswg.org/css-values-4/
 TR: https://www.w3.org/TR/css-values-4/
+Previous Version: https://www.w3.org/TR/2020/WD-css-values-4-20201111/
 Previous Version: https://www.w3.org/TR/2019/WD-css-values-4-20190131/
 Previous Version: https://www.w3.org/TR/2018/WD-css-values-4-20181010/
 Editor: Tab Atkins, Google, http://xanthir.com/contact/, w3cid 42199
@@ -15,7 +16,7 @@ Abstract: This CSS module describes the common values and units that CSS propert
 At Risk: ''toggle()'', ''attr()''
 Ignored Terms: <spacing-limit>, containing block, property
 Ignored Vars: Cn+1, n
-Inline Github Issues: yes
+Inline Github Issues: title
 Default Highlight: css
 </pre>
 <pre class='link-defaults'>
@@ -541,8 +542,8 @@ Author-defined Identifiers: the <<custom-ident>> type</h3>
 	This generic data type is denoted by <dfn id="identifier-value">&lt;custom-ident></dfn>,
 	and represents any valid CSS <a>identifier</a>
 	that would not be misinterpreted as a pre-defined keyword in that property's value definition.
-	Such identifiers are fully [=case-sensitive=]
-	(meaning they're compared by codepoint),
+	Such identifiers are fully case-sensitive
+	(meaning they're compared using the "[=identical to=]" operation),
 	even in the ASCII range
 	(e.g. ''example'' and ''EXAMPLE'' are two different, unrelated user-defined identifiers).
 
@@ -590,7 +591,7 @@ Author-defined Identifiers: the <<custom-ident>> type</h3>
 
 	The <dfn><<dashed-ident>></dfn> production
 	is a <<custom-ident>>,
-	with all the [=case-sensitivity=] that implies,
+	with all the case-sensitivity that implies,
 	with the additional restriction that it must start with two dashes
 	(U+002D HYPHEN-MINUS).
 
@@ -1241,7 +1242,7 @@ Mixing Percentages and Dimensions</h3>
 	Note: Specifications should never alternate <<percentage>> in place of a dimension
 	in a grammar unless they are <a>compatible</a>.
 
-	Note: More &lt;<var>type</var>-percentage> productions can be added in the future as needed.
+	Note: More &lt;<var ignore>type</var>-percentage> productions can be added in the future as needed.
 	A &lt;number-percentage> will never be added,
 	as <<number>> and <<percentage>> can't be combined in ''calc()''.
 
@@ -2965,6 +2966,10 @@ Stepped Value Functions: ''round()'', ''mod()'', and ''rem()''</h3>
 	If <<rounding-strategy>> is omitted,
 	it defaults to ''nearest''.
 
+	Issue(5689): CSSOM needs to specify how it rounds,
+	and it's probably good for CSS functions to round the same way by default.
+	What behavior should be used?
+
 	<div class=example>
 		Unlike languages like JavaScript
 		which have a natural "precision" to round to