Add release notes for v0.0.7

docs/release-notes/v0.0.md

@@ -4,6 +4,24 @@ tocdepth: 2
 
 # v0.0
 
+## v0.0.7
+
+*Released August 27, 2023*
+
+### Changes
+
+- Added generic linear modulation schemes in `sdr.LinearModulation`.
+- Added $\pi/M$ PSK modulation in `sdr.PiMPSK`.
+- Added offset QPSK modulation in `sdr.OQPSK`.
+- Added rectangular pulse shapes in `sdr.rectangular()`.
+- Added half-sine pulse shapes in `sdr.half_sine()`.
+- Added pulse shaping in linear modulations. Now `map_symbols()` and `decide_symbols()` operate on 1 sample per symbol
+  and `modulate()` and `demodulate()` operate on multiple samples per symbol.
+
+### Contributors
+
+- Matt Hostetter ([@mhostetter](https://github.com/mhostetter))
+
 ## v0.0.6
 
 *Released August 20, 2023*