[already implemented] Lfo Restart Cycle

If your LFO Device is #1 in the DSP chain, then you can use the pattern command: 1600

See the official docs for more info on the meta devices:
http://tutorials.renoise.com/Renoise/MetaDevices

Also see this previous thread for more handy LFO info:
https://forum.renoise.com/t/sync-lfo-start-to-pattern-start/19773

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