Added methods in dynSeries class for filtering (hptrend and hpcycle).
Do not produce plot in dynSeries::hpcycle unitary test.
Added missing tag for triggering unitary tests.
Added Baxter and King (1999) band pass filter for dynSeries objects.
Added headers.
Fixed bug affecting fs2000/fs2000_calib.mod and shock_decomp_calibrated_model/example1_calib_shock_decomp.mod.