Add dumps of CSS definitions per spec

See discussion in w3c/reffy#113

The dumps follow a simple JSON structure that separates definitions of
properties, descriptors and valuespaces. That structure may evolve and
completely change over time, depending on needs.

w3c/css/compat.json

@@ -0,0 +1,91 @@
+{
+  "properties": {
+    "-webkit-background-clip": {
+      "name": "-webkit-background-clip",
+      "value": "border-box | padding-box | content-box | text",
+      "initial": "none",
+      "appliesTo": "all elements",
+      "inherited": "no",
+      "percentages": "N/A",
+      "media": "visual",
+      "computedValue": "\"text\"",
+      "canonicalOrder": "per grammar",
+      "animationType": "discrete"
+    },
+    "-webkit-text-fill-color": {
+      "name": "-webkit-text-fill-color",
+      "value": "<color>",
+      "initial": "currentcolor",
+      "appliesTo": "all elements",
+      "inherited": "yes",
+      "percentages": "N/A",
+      "media": "visual",
+      "computedValue": "an RGBA color",
+      "canonicalOrder": "per grammar",
+      "animationType": "as color"
+    },
+    "-webkit-text-stroke-color": {
+      "name": "-webkit-text-stroke-color",
+      "value": "<color>",
+      "initial": "currentcolor",
+      "appliesTo": "all elements",
+      "inherited": "yes",
+      "percentages": "N/A",
+      "media": "visual",
+      "computedValue": "an RGBA color",
+      "canonicalOrder": "per grammar",
+      "animationType": "as color"
+    },
+    "-webkit-text-stroke-width": {
+      "name": "-webkit-text-stroke-width",
+      "value": "<line-width>",
+      "initial": "0",
+      "appliesTo": "all elements",
+      "inherited": "yes",
+      "percentages": "N/A",
+      "media": "visual",
+      "computedValue": "absolute length",
+      "canonicalOrder": "per grammar",
+      "animationType": "discrete"
+    },
+    "-webkit-text-stroke": {
+      "name": "-webkit-text-stroke",
+      "value": "<line-width> || <color>",
+      "initial": "See individual properties",
+      "appliesTo": "See individual properties",
+      "inherited": "yes",
+      "percentages": "N/A",
+      "media": "visual",
+      "computedValue": "See individual properties",
+      "canonicalOrder": "per grammar",
+      "animationType": "See individual properties"
+    },
+    "touch-action": {
+      "name": "touch-action",
+      "value": "auto | none | [ [ pan-x | pan-left | pan-right ] || [ pan-y | pan-up | pan-down ] || pinch-zoom ] | manipulation",
+      "initial": "auto",
+      "appliesTo": "all elements except: non-replaced inline elements, table rows, row groups, table columns, and column groups.",
+      "inherited": "no",
+      "percentages": "N/A",
+      "media": "visual",
+      "computedValue": "Same as specified value",
+      "canonicalOrder": "per grammar",
+      "animationType": "discrete"
+    }
+  },
+  "descriptors": {
+    "-webkit-device-pixel-ratio": {
+      "name": "-webkit-device-pixel-ratio",
+      "for": "@media",
+      "value": "<number>",
+      "type": "range"
+    },
+    "-webkit-transform-3d": {
+      "name": "-webkit-transform-3d",
+      "for": "@media",
+      "value": "<mq-boolean>",
+      "acceptsMin/maxPrefixes": "no"
+    }
+  },
+  "valuespaces": {}
+}

w3c/css/compositing.json

@@ -0,0 +1,52 @@
+{
+  "properties": {
+    "mix-blend-mode": {
+      "name": "mix-blend-mode",
+      "value": "<blend-mode>",
+      "initial": "normal",
+      "appliesTo": "All elements. In SVG, it applies to container elements, graphics elements and graphics referencing elements. [SVG11]",
+      "inherited": "no",
+      "percentages": "N/A",
+      "media": "visual",
+      "computedValue": "as specified",
+      "canonicalOrder": "per grammar",
+      "animatable": "no"
+    },
+    "isolation": {
+      "name": "isolation",
+      "value": "<isolation-mode>",
+      "initial": "auto",
+      "appliesTo": "All elements. In SVG, it applies to container elements, graphics elements and graphics referencing elements. [SVG11]",
+      "inherited": "no",
+      "percentages": "N/A",
+      "media": "visual",
+      "computedValue": "as specified",
+      "canonicalOrder": "per grammar",
+      "animatable": "no"
+    },
+    "background-blend-mode": {
+      "name": "background-blend-mode",
+      "value": "<blend-mode>#",
+      "initial": "normal",
+      "appliesTo": "All HTML elements",
+      "inherited": "no",
+      "percentages": "N/A",
+      "media": "visual",
+      "computedValue": "as specified",
+      "canonicalOrder": "per grammar",
+      "animatable": "no"
+    }
+  },
+  "descriptors": {},
+  "valuespaces": {
+    "<blend-mode>": {
+      "value": "normal | multiply | screen | overlay | darken | lighten | color-dodge |color-burn | hard-light | soft-light | difference | exclusion | hue | saturation | color | luminosity"
+    },
+    "<isolation-mode>": {
+      "value": "auto | isolate"
+    },
+    "<composite-mode>": {
+      "value": "clear | copy | source-over | destination-over | source-in | destination-in | source-out | destination-out | source-atop | destination-atop | xor | lighter | plus-darker | plus-lighter"
+    }
+  }
+}

w3c/css/css-align.json

@@ -0,0 +1,154 @@
+{
+  "properties": {
+    "align-content": {
+      "name": "align-content",
+      "value": "normal | <baseline-position> | <content-distribution> | <overflow-position>? <content-position>",
+      "initial": "normal",
+      "appliesTo": "block containers, multicol containers, flex containers, and grid containers",
+      "inherited": "no",
+      "percentages": "n/a",
+      "computedValue": "specified value",
+      "canonicalOrder": "per grammar",
+      "animatable": "no"
+    },
+    "justify-content": {
+      "name": "justify-content",
+      "value": "normal | <content-distribution> | <overflow-position>? [ <content-position> | left | right ]",
+      "initial": "normal",
+      "appliesTo": "multicol containers, flex containers, and grid containers",
+      "inherited": "no",
+      "percentages": "n/a",
+      "computedValue": "specified value",
+      "canonicalOrder": "per grammar",
+      "animatable": "no"
+    },
+    "place-content": {
+      "name": "place-content",
+      "value": "<‘align-content’> <‘justify-content’>?",
+      "initial": "normal",
+      "appliesTo": "block containers, flex containers, and grid containers",
+      "inherited": "no",
+      "percentages": "n/a",
+      "computedValue": "see individual properties",
+      "canonicalOrder": "per grammar",
+      "animatable": "no"
+    },
+    "justify-self": {
+      "name": "justify-self",
+      "value": "auto | normal | stretch | <baseline-position> | <overflow-position>? [ <self-position> | left | right ]",
+      "initial": "auto",
+      "appliesTo": "block-level boxes, absolutely-positioned boxes, and grid items",
+      "inherited": "no",
+      "percentages": "n/a",
+      "computedValue": "specified value",
+      "canonicalOrder": "per grammar",
+      "animatable": "no"
+    },
+    "align-self": {
+      "name": "align-self",
+      "value": "auto | normal | stretch | <baseline-position> | <overflow-position>? <self-position>",
+      "initial": "auto",
+      "appliesTo": "flex items, grid items, and absolutely-positioned boxes",
+      "inherited": "no",
+      "percentages": "n/a",
+      "computedValue": "specified value",
+      "canonicalOrder": "per grammar",
+      "animatable": "no"
+    },
+    "place-self": {
+      "name": "place-self",
+      "value": "<‘align-self’> <‘justify-self’>?",
+      "initial": "auto",
+      "appliesTo": "block-level boxes, absolutely-positioned boxes, and grid items",
+      "inherited": "no",
+      "percentages": "n/a",
+      "computedValue": "see individual properties",
+      "canonicalOrder": "per grammar",
+      "animatable": "no"
+    },
+    "justify-items": {
+      "name": "justify-items",
+      "value": "normal | stretch | <baseline-position> | <overflow-position>? [ <self-position> | left | right ] | legacy | legacy && [ left | right | center ]",
+      "initial": "legacy",
+      "appliesTo": "all elements",
+      "inherited": "no",
+      "percentages": "n/a",
+      "computedValue": "specified value, except for legacy (see prose)",
+      "canonicalOrder": "per grammar",
+      "animatable": "no"
+    },
+    "align-items": {
+      "name": "align-items",
+      "value": "normal | stretch | <baseline-position> | [ <overflow-position>? <self-position> ]",
+      "initial": "normal",
+      "appliesTo": "all elements",
+      "inherited": "no",
+      "percentages": "n/a",
+      "computedValue": "specified value",
+      "canonicalOrder": "per grammar",
+      "animatable": "no"
+    },
+    "place-items": {
+      "name": "place-items",
+      "value": "<‘align-items’> <‘justify-items’>?",
+      "initial": "see individual properties",
+      "appliesTo": "all elements",
+      "inherited": "no",
+      "percentages": "n/a",
+      "computedValue": "see individual properties",
+      "canonicalOrder": "per grammar",
+      "animatable": "no"
+    },
+    "row-gap": {
+      "name": "row-gap",
+      "value": "normal | <length-percentage>",
+      "initial": "normal",
+      "appliesTo": "multi-column containers, flex containers, grid containers",
+      "inherited": "no",
+      "percentages": "refer to corresponding dimension of the content area",
+      "computedValue": "as specified, with <length>s made absolute",
+      "canonicalOrder": "per grammar",
+      "animatable": "as length, percentage, or calc"
+    },
+    "column-gap": {
+      "name": "column-gap",
+      "value": "normal | <length-percentage>",
+      "initial": "normal",
+      "appliesTo": "multi-column containers, flex containers, grid containers",
+      "inherited": "no",
+      "percentages": "refer to corresponding dimension of the content area",
+      "computedValue": "as specified, with <length>s made absolute",
+      "canonicalOrder": "per grammar",
+      "animatable": "as length, percentage, or calc"
+    },
+    "gap": {
+      "name": "gap",
+      "value": "<‘row-gap’> <‘column-gap’>?",
+      "initial": "see individual properties",
+      "appliesTo": "multi-column containers, flex containers, grid containers",
+      "inherited": "no",
+      "percentages": "refer to corresponding dimension of the content area",
+      "computedValue": "see individual properties",
+      "canonicalOrder": "per grammar",
+      "animatable": "as length, percentage, or calc"
+    }
+  },
+  "descriptors": {},
+  "valuespaces": {
+    "<self-position>": {
+      "value": "center | start | end | self-start | self-end | flex-start | flex-end;"
+    },
+    "<content-position>": {
+      "value": "center | start | end | flex-start | flex-end;"
+    },
+    "<baseline-position>": {
+      "value": "[ first | last ]? baseline"
+    },
+    "<content-distribution>": {
+      "value": "space-between | space-around | space-evenly | stretch"
+    },
+    "<overflow-position>": {
+      "value": "unsafe | safe"
+    }
+  }
+}

w3c/css/css-animations.json

@@ -0,0 +1,21 @@
+{
+  "properties": {
+    "animation-composition": {
+      "name": "animation-composition",
+      "value": "<single-animation-composition>#",
+      "initial": "replace",
+      "appliesTo": "all elements, ::before and ::after pseudo-elements",
+      "inherited": "none",
+      "percentages": "N/A",
+      "computedValue": "As specified",
+      "canonicalOrder": "per grammar",
+      "animatable": "no"
+    }
+  },
+  "descriptors": {},
+  "valuespaces": {
+    "<single-animation-composition>": {
+      "value": "replace | add | accumulate"
+    }
+  }
+}