Add overload to use Sequence<String> instead of InputStream

[LeoColman]

The default usage of the API is

val fileInputStream: InputStream = getFileInputStream()

fixedLengthFileParser<MyUserRecord>(fileInputStream) {
    MyUserRecord(
        field(0, 30, Padding.PaddingRight(' ')),
        field(30, 39, Padding.PaddingLeft('0')),
        field(39, 49)
    )    
}

In this case, we'll use the fileInputStream, but won't close it. When using a method such as useLines from STDLib, one can use a sequence of lines from a file. In that case, we should allow parsing/transforming that sequence instead of the stream as well.