Created the SysEx event but unfortunately we cannot do anything special with it, since it varies per manufacturer what the data is and there are really no guidelines. That being said, they should be ready for loading and writing them back to the stream.
Implemented the meta event and discovered that MIDI uses variable length events, so a few adjustments will be made in the next commit to suit for this. Example still runs, but meta and sysex event cannot be tested (yet). As soon as work on the reading of files is started, these will be tested.
Updated readme