[ossia-max] multiple expose doesn't communicate in between instance.

[pach]

when device is receiving multiple expose, the synchronisation is not effective in between them. If data sended from score, interface is up to date but data are not synchronized threw OSC and if sended threw OSC, not forwarded to score. https://gist.github.com/pach/1a2d25f8efe1c97a301f525a5d77afaa

[bltzr]

is this connected to this one: https://github.com/OSSIA/libossia/issues/70 ? @jcelerier @avilleret