Bug with JSON file containing escaped backslashes ("\\")

[hokiedsp]

Hey, thank you for making this vscode extension available. I've been using it extensively. I'm here to report a bug that I just encountered.

When JSON file contains a string with escaped backslash ('\') followed by a character which is associated with another escaped character, it breaks the data.

I encountered this for JSON file containing a Windows file path, e.g.,

{
"myfile" : "C:\\folder\\thisone\\file.txt"
}

Running the extension on this file yields

{
"myfile" : "C:\\folder\thisone\\file.txt"
}

One of the backslash gets omitted, resulting in "C:\folderhisone\file.txt"

Hope this makes sense. Thanks.