change css_units to CSS_UNITS for consistency

Author: joshday

src/Cobweb.jl

@@ -29,15 +29,14 @@ function Tab(x)
     preview(x; reuse=false)
 end
 
-#-----------------------------------------------------------------------------# consts & "enums"
+#-----------------------------------------------------------------------------# consts
 const HTML5_TAGS = [:a,:abbr,:address,:area,:article,:aside,:audio,:b,:base,:bdi,:bdo,:blockquote,:body,:br,:button,:canvas,:caption,:cite,:code,:col,:colgroup,:command,:datalist,:dd,:del,:details,:dfn,:dialog,:div,:dl,:dt,:em,:embed,:fieldset,:figcaption,:figure,:footer,:form,:h1,:h2,:h3,:h4,:h5,:h6,:head,:header,:hgroup,:hr,:html,:i,:iframe,:img,:input,:ins,:kbd,:label,:legend,:li,:link,:main,:map,:mark,:math,:menu,:menuitem,:meta,:meter,:nav,:noscript,:object,:ol,:optgroup,:option,:output,:p,:param,:picture,:pre,:progress,:q,:rb,:rp,:rt,:rtc,:ruby,:s,:samp,:script,:section,:select,:slot,:small,:source,:span,:strong,:style,:sub,:summary,:sup,:svg,:table,:tbody,:td,:template,:textarea,:tfoot,:th,:thead,:time,:title,:tr,:track,:u,:ul,:var,:video,:wbr]
 
 const VOID_ELEMENTS = [:area,:base,:br,:col,:command,:embed,:hr,:img,:input,:keygen,:link,:meta,:param,:source,:track,:wbr]
 
 const SVG2_TAGS = [:a,:animate,:animateMotion,:animateTransform,:audio,:canvas,:circle,:clipPath,:defs,:desc,:discard,:ellipse,:feBlend,:feColorMatrix,:feComponentTransfer,:feComposite,:feConvolveMatrix,:feDiffuseLighting,:feDisplacementMap,:feDistantLight,:feDropShadow,:feFlood,:feFuncA,:feFuncB,:feFuncG,:feFuncR,:feGaussianBlur,:feImage,:feMerge,:feMergeNode,:feMorphology,:feOffset,:fePointLight,:feSpecularLighting,:feSpotLight,:feTile,:feTurbulence,:filter,:foreignObject,:g,:iframe,:image,:line,:linearGradient,:marker,:mask,:metadata,:mpath,:path,:pattern,:polygon,:polyline,:radialGradient,:rect,:script,:set,:stop,:style,:svg,:switch,:symbol,:text,:textPath,:title,:tspan,:unknown,:use,:video,:view]
 
-const css_units = (ch="ch", cm="cm", em="em", ex="ex", fr="fr", in="in", mm="mm", pc="pc", percent="%",
-    pt="pt", px="px", rem="rem", vh="vh", vmax="vmax", vmin="vmin", vw="vw")
+const CSS_UNITS = [:ch,:cm,:em,:ex,:fr,:in,:mm,:pc,:percent,:pt,:px,:rem,:vh,:vmax,:vmin,:vw]
 
 #-----------------------------------------------------------------------------# Node
 """