Add Spread feature

features/spread.yml

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+name: Spread syntax
+description: The spread (`...`) syntax allows an iterable, such as an array or string, to be expanded in places where zero or more arguments (for function calls) or elements (for array literals) are expected.
+spec: https://tc39.es/ecma262/multipage/ecmascript-language-expressions.html#prod-SpreadElement
+group: javascript
+snapshot: ecmascript-2015
+compat_features:
+  - javascript.operators.spread
+  - javascript.operators.spread.spread_in_arrays
+  - javascript.operators.spread.spread_in_function_calls
+  - javascript.operators.spread.spread_in_object_literals

features/spread.yml.dist

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+# Generated from: spread.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+status:
+  baseline: high
+  baseline_low_date: 2020-01-15
+  baseline_high_date: 2022-07-15
+  support:
+    chrome: "60"
+    chrome_android: "60"
+    edge: "79"
+    firefox: "55"
+    firefox_android: "55"
+    safari: "11.1"
+    safari_ios: "11.3"
+compat_features:
+  # baseline: high
+  # baseline_low_date: 2015-10-14
+  # baseline_high_date: 2018-04-14
+  # support:
+  #   chrome: "46"
+  #   chrome_android: "46"
+  #   edge: "12"
+  #   firefox: "16"
+  #   firefox_android: "16"
+  #   safari: "8"
+  #   safari_ios: "8"
+  - javascript.operators.spread
+  - javascript.operators.spread.spread_in_arrays
+
+  # baseline: high
+  # baseline_low_date: 2015-10-14
+  # baseline_high_date: 2018-04-14
+  # support:
+  #   chrome: "46"
+  #   chrome_android: "46"
+  #   edge: "12"
+  #   firefox: "27"
+  #   firefox_android: "27"
+  #   safari: "8"
+  #   safari_ios: "8"
+  - javascript.operators.spread.spread_in_function_calls
+
+  # ⬇️ Same status as overall feature ⬇️
+  # baseline: high
+  # baseline_low_date: 2020-01-15
+  # baseline_high_date: 2022-07-15
+  # support:
+  #   chrome: "60"
+  #   chrome_android: "60"
+  #   edge: "79"
+  #   firefox: "55"
+  #   firefox_android: "55"
+  #   safari: "11.1"
+  #   safari_ios: "11.3"
+  - javascript.operators.spread.spread_in_object_literals