New Languages:

• Added 3rd party Laravel Blade grammar to SUPPORTED_LANGUAGES (#2944) Michael Newton

Language grammar improvements:

• enh(scala) fix triple quoted strings (#2987) Josh Goebel
• enh(perl) Much improved regex detection (#2960) Josh Goebel
• enh(swift) Improved highlighting for operator and precedencegroup declarations. (#2938) Steven Van Impe
• fix(xml) Support single-character namespaces. (#2957) [Jan Pilzer][]
• enh(ruby) Support for character literals (#2950) Vaibhav Chanana
• enh(powershell) Add three VALID_VERBS and update the reference link (#2981) davidhcefx

Grammar Deprecations:

• Deprecate c-like, though you should not be using it directly anyways.
  • will be removed in v11.
• c and cpp are now wholly unique grammars that will diverge over time

Parser:

• new simpler highlightAll() API (#2962) Josh Goebel
  • this should be a drop-in replacement for both initHighlighting() and initHighlightingOnLoad()
  • note: it does not prevent itself from being called multiple times (as the previous API did)
• beginKeyword no longer bestows double relevance (#2953) Josh Goebel
• allow keywords to be an array of strings Josh Goebel
• add modes.MATCH_NOTHING_RE that will never match
  • This can be used with end to hold a mode open (it must then be ended with endsParent in one of it's children modes) Josh Goebel

Deprecations:

• initHighlighting() and initHighlightingOnLoad() deprecated.
  • Please use the new highlightAll() API instead.
  • Deprecated as of 10.6.
  • These will both be aliases to highlightAll in v11.