Align

 * add an align query combinator to linearly interpolate 2 time series
 * add a CLI app to perform some queries

needs:

 * port marquise data export to this CLI app
I meant more the multiplication by (val2 - val1) - if val2 and val1 are actually floats but they're being treated as integers I don't see how that could give us the results we expect. Am I missing something?