Nunjucks v2.2.1

Fixes:

• fix highlight inside HTML tags

Changes:

• add PHP support
• improve compatibility with HTML syntax highlighting
• move context definitions into separate named blocks: nunjucks-statement, nunjucks-expression, and nunjucks-comment
• add a new prototype context to include nunjucks package globally
• simplify the main context with a single reference to meta.template.njk
• update statement, expression, and comment blocks to use individual includes for relevant Nunjucks elements