Prepare for release

Author: olofk

NEWS

@@ -1,3 +1,19 @@
+0.5.3 2023-12-08 Olof Kindgren
+======================================================
+* New flows: efinity
+* New tools: efinity, sandpipersaas
+* cocotb support for simulation flow
+* New backends for legacy Tool API design_compiler, genus
+* libero: Support projects without constraints or source files
+* ise: Add --pgm switch
+* radiant: Support SystemVerilog
+* quartus: Add --pgm switch
+* SymbiFlow: Support SystemVerilog
+* verilator: Support additional gen-xml, gen-dpi-hdr, gen-preprocess modes
+* vivado: Add --pgm switch
+* vunit: Support file dependencies
+* Fix EDAM documentation for flows and tools
+
 0.5.1 2023-05-17 Olof Kindgren
 ======================================================
 * yosys: Fix yosys_template option