Release v1.3.0 on 2021-02-23.

1. 8537b90 buildenv: cosmetic changes by Vadim Yanitskiy · 7 years ago
2. 038fd7f buildenv: fix build on systems without SIMD support by Vadim Yanitskiy · 7 years ago
3. 0cd246c buildenv: actually strip unused cpuid functionality by Vadim Yanitskiy · 7 years ago
4. 61fbf2e buildenv: correct the ax_sse macro description by Vadim Yanitskiy · 7 years ago
5. e8ae9fc buildenv: Split up SSE3 and SSE4.1 code by Philipp Maier · 7 years ago[Renamed (93%) from config/ax_ext.m4]
6. f5bf33b buildenv: Make build CPU invariant by Philipp Maier · 7 years ago
7. 3eaae80 Transceiver52M: Replace convolve and related calls with SSE implementation by Thomas Tsou · 11 years ago