Release 2.2.2

• Fix empty search match before UTF-16 surrogate pair causing infinite loop (5fa8c2c)
• Search filter is now called with the correct start and end parameters when only a part of the document is searched (5fa8c2c)
• Slightly altered appearance of empty search matches (5fa8c2c)
• Improved javascript template strings. Previously strings with empty interpolation expressions such as `a${}b` would not be highlighted as a template string. Now it will be, improving UX while typing (3887da8)