Brendon Pierson

While trying to parse a workbook I received the following error: ``` ** (MatchError) no match of right hand side value: "R1" (xlsxir 1.6.4) lib/xlsxir/parse_workbook.ex:27: anonymous fn/2 in Xlsxir.ParseWorkbook.sax_event_handler/2 (elixir...

Adding two more config options that get passed to the underlying erlang ssh connect: `preferred_algorithms` and `packet_size`