Update version number

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Fix XM delay effect with no note or instrument

Not sure if this is the correct fix, but it covers the OpenMPT delay1 and
delay3 XM test cases at the same time. We use the most recently set volume
if no volume, instrument or note are set in the delayed line.

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
[test] Add OpenMPT delay3.xm test case

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>