Add NEWS.md and document filter name changes

simonster · simonster · commit 5c5ab91d00f9 · 2015-04-06T16:50:12.000-04:00
diff --git a/NEWS.md b/NEWS.md
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+# DSP v0.1.0 Release Notes
+
+- Filter coefficient types have been renamed to distinguish them from implementations (#96):
+  - The `Filter` abstract type is now `FilterCoefficients`
+  - `ZPKFilter` is now `ZeroPoleGain`
+  - `TFFilter` is now `PolynomialRatio`
+  - `BiquadFilter` is now `Biquad`
+  - `SOSFilter` is now `SecondOrderSections`
