Add release notes for v0.0.28

Author: mhostetter

docs/release-notes/v0.0.md

@@ -4,6 +4,20 @@ tocdepth: 2
 
 # v0.0
 
+## v0.0.28
+
+*Released April 12, 2025*
+
+### Changes
+
+- Added `offset_rate` to `sdr.sample_rate_offset()`.
+- Added application of clock error (frequency shift and time compression) in `sdr.clock_error()`.
+- Fixed automatic axis scaling in plots.
+
+### Contributors
+
+- Matt Hostetter ([@mhostetter](https://github.com/mhostetter))
+
 ## v0.0.27
 
 *Released March 22, 2025*