for release 0.0.4

- Circuit: is now pickleable and comparable
- Circuit: utilities for locating/indexing io-ports
- Verilog: parser fixes, support yosys-style verilog
- SDF: parser fixes, full XOR support
- STIL: parser fixes
- Simulators: faster, up to 4-input cells, pickleable
- WaveSim: WSA calculation support
- WaveSim: Per-simulation parameters and delays
- Logic: Data are now raw numpy arrays
- Logic: More tools for bit-packing
- Added DEF parser
- Better techlib support for NanGate, SAED, GSC180
- Tests and docs improvements

docs/Makefile

@@ -1,3 +1,5 @@
+# pip install sphinx sphinx-rtd-theme
+#
 # Minimal makefile for Sphinx documentation
 #