Merge branch 'master' into eddie/muxpack

diff --cc CHANGELOG
index db7e14957ee86240b94a1bb7b4823f880a4738da,4c38f6e6e917a5b6e01b6dbeff74cd6d3c8f8fd0..8b93051ea0bc0f34827bc4303a01ea7c38854ab0
--- 1/CHANGELOG
--- 2/CHANGELOG
+++ b/CHANGELOG
@@@ -17,7 -17,7 +17,8 @@@ Yosys 0.8 .. Yosys 0.8-de
      - Added "rename -src"
      - Added "equiv_opt" pass
      - Added "read_aiger" frontend
+     - Extended "muxcover -mux{4,8,16}=<cost>"
 +    - Added "muxpack" pass
      - "synth_xilinx" to now infer hard shift registers, using new "shregmap -tech xilinx"