Parser tokeniser states (WIP, doesn't yet do script/style)

sky/specs/markup.md

 Sky Markup: Syntax
 ==================
 
 A Sky file must consist of the following components:
 
  1. If the file is intended to be a top-level Sky application, the
     string "```#!mojo mojo:sky```" followed by a U+0020, U+000A or
     U+000D character.
 
     If the file is intended to be a module, then the string "SKY", a
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 An element consists of the following:
 
 1. ```<```
 2. Tag name: A sequence of characters other than ```/```, ```>```,
    U+0020, U+000A, U+000D (whitespace).
 3. Zero or more of the following:
    1. One or more U+0020, U+000A, U+000D (whitespace).
    2. Attribute name: A sequence of characters other than ```/```,
       ```=```, ```>```, U+0020, U+000A, U+000D (whitespace).
    3. Optionally:
-      1. ```=```
-      2. Attribute value: Either:
+      1. Zero or more U+0020, U+000A, U+000D (whitespace) characters.
+      2. ```=```
+      3. Zero or more U+0020, U+000A, U+000D (whitespace) characters.
+      4. Attribute value: Either:
          - ```'``` followed by attribute text other than ```'```
            followed by a terminating ```'```.
          - ```"``` followed by attribute text other than ```'```
            followed by a terminating ```"```.
          - attribute text other than ```/```, ```>```,
            U+0020, U+000A, U+000D (whitespace).
          "Attribute text" is escapes or any unicode characters other
          than U+0000.
 4. Either:
    - For a void element:
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 The following attributes are available on all elements:
 
 id="" (any value)
 class="" (any value, space-separated)
 style="" (declaration part of a Sky style rule)
 lang="" (language code)
 dir="" (ltr or rtl only)
 
 contenteditable="" (subject to future developments)
 tabindex="" (subject to future developments)