Streaming processing

[thom4parisot]

• [x] pass data through a pipe
• [x] document README
• [x] tests pass
• [x] are the results relevant? (esp compared w/ array processing)
• [x] by default determine the sliding window based on the slayer.config.minPeakDistance value (like *4) and use an offset being 1/3 or 1/2 of this
• [x] reintroduce spike deduplication from f85e1ed3aa1dbcc9329673aedb7499af5108cddb

A Stanford paper recommends the use of sliding window techniques.

closes #1