Consider renaming arrowFunction.useParentheses: "always"

[mrazauskas]

Currently the arrowFunction.useParentheses option is the only which takes "force" value. Renaming "force" to "always" would make the API more consistent.

Consider the following:

semiColons

• "always" - Always uses semi-colons where applicable.

useBraces

• "always" - Forces the use of braces. Will add them if they aren't used.
• "preferNone" - Forces no braces when the header is one line and body is one line. Otherwise forces braces.

trailingCommas

• "always" - Trailing commas should always be used.
• "never" - Trailing commas should not be used.

jsx.multiLineParens

• "always" - Always wrap JSX with parentheses if it spans multiple lines.
• "never" - Never wrap JSX with parentheses.

And so on and on (;

[mrazauskas]

@dsherret Oh.. Just now I noticed that you added labels. To be sure: does that mean you would merge a PR with this change? I could try putting it together.