Fixed numerous errors listed below:

-Added RFC2396 reference
-Quoted MIME types
-Added reference targets to all mentionings of RFCs
-Improved artwork spacing, updated all JSON examples to use consistent spacing
-Added external references to URLs
-Improved wording to:
--Core Schema Definition
--required
--requires
--minimum
--maximum
--exclusiveMaximum
--exclusiveMinimum
--minItems
--maxItems
--uniqueItems
--pattern
--maxLength
--minLength
--enum
--title
--description
--id
--targetSchema
--method
--readonly
--contentEncoding
--default
-Lists now use hanging style where appropriate
-Moved "root" link under instance links
-Fixed list layout for rel
-Fixed sectioning of targetSchema
-Cleaned up changelog
-Removed no longer outstanding open issues
-Added recognition of work