v2.8.0

Adds autofixes for the following rules:

1. class-method-newlines
2. jsx-attribute-spacing
3. jsx-expression-spacing
4. jsx-no-closing-bracket-newline
5. jsx-no-braces-for-string-attributes
6. prefer-or-operator-over-ternary
7. no-braces-for-single-line-arrow-functions