Seekable

Seekable permits random access read and write

Append

examples of appending data to the end of a Seekable (In this case files)
    import scalax.io._

    // see codec example for why codec is required
    implicit val codec = Codec.UTF8

    val someFile: Seekable = Resource.fromFileString("someFile")
    someFile.append("append this string")
    someFile.appendStrings(List("s one", "s two"),Line.Terminators.RNPair.sep)