Reindent comments

[shindgewongxj]

Comments added by hotkey ⌘ + / start at the head of the line by default, with SwiftFormat, it can be swifter like:

if condition {
//                  Do on condition
    ...
}

SwiftFormat

if condition {
    // Do on condition
    ...
}

• reindent
• remove unnecessary space between comments and //

[nicklockwood]

The reason I don't do this currently is that people often comment out code temporarily, and having SwiftFormat mangle the indenting in that case is annoying.