Issue #16: Multiline string indent control does not work

[loop8ack]

As discussed in #16, here is the implementation of my two suggestions:

Public WriteRaw-Method

It simply calls the InnerWriteRaw method.

WriteRawSymbol

It writes the text using the InnerWriteRaw method. Use as follows:

return $$""
    return @"{{RAW(myMultilineString)}}"
    """;