Add release notes for v0.0.19

docs/release-notes/v0.0.md

@@ -4,6 +4,26 @@ tocdepth: 2
 
 # v0.0
 
+## v0.0.19
+
+*Released May 27, 2024*
+
+### Changes
+
+- Added calculation of Cramér-Rao lower bounds (CRLBs) for TOA, TDOA, FOA, and FDOA in `sdr.toa_crlb()`,
+  `sdr.tdoa_crlb()`, `sdr.foa_crlb()`, and `sdr.fdoa_crlb()`.
+- Added calculation of the effective SNR of the product of two signals in `sdr.composite_snr()`.
+- Added calculation of RMS integration time in `sdr.rms_integration_time()`.
+- Added calculation of RMS bandwidth in `sdr.rms_bandwidth()`.
+- Added calculation of Shannon's capacity for the binary-input additive white Gaussian noise (BI-AWGN) channel in
+  `sdr.biawgn_capacity()`.
+- Renamed `sdr.to_real_pb()` to `sdr.to_real_passband()`.
+- Renamed `sdr.to_complex_bb()` to `sdr.to_complex_baseband()`.
+
+### Contributors
+
+- Matt Hostetter ([@mhostetter](https://github.com/mhostetter))
+
 ## v0.0.18
 
 *Released May 12, 2024*