update docs for 0.12.2 changes

(cherry picked from commit e6e60c4fa848d1c9ce1349eff750cfa2faf156dc)

docs/ref-04-tags-and-attributes.md

@@ -56,12 +56,13 @@ accept acceptCharset accessKey action allowFullScreen allowTransparency alt
 async autoComplete autoPlay cellPadding cellSpacing charSet checked classID
 className cols colSpan content contentEditable contextMenu controls coords
 crossOrigin data dateTime defer dir disabled download draggable encType form
-formNoValidate frameBorder height hidden href hrefLang htmlFor httpEquiv icon
-id label lang list loop manifest max maxLength media mediaGroup method min
-multiple muted name noValidate open pattern placeholder poster preload
-radioGroup readOnly rel required role rows rowSpan sandbox scope scrolling
-seamless selected shape size sizes span spellCheck src srcDoc srcSet start step
-style tabIndex target title type useMap value width wmode
+formAction formEncType formMethod formNoValidate formTarget frameBorder height
+hidden href hrefLang htmlFor httpEquiv icon id label lang list loop manifest
+marginHeight marginWidth max maxLength media mediaGroup method min multiple
+muted name noValidate open pattern placeholder poster preload radioGroup
+readOnly rel required role rows rowSpan sandbox scope scrolling seamless
+selected shape size sizes span spellCheck src srcDoc srcSet start step style
+tabIndex target title type useMap value width wmode
 ```
 
 In addition, the following non-standard attributes are supported:

tips/06-style-props-value-px.md

@@ -29,6 +29,7 @@ Sometimes you _do_ want to keep the CSS properties unitless. Here's a list of pr
 - `opacity`
 - `order`
 - `orphans`
+- `strokeOpacity`
 - `widows`
 - `zIndex`
 - `zoom`