Change license to 2-clause BSD
Support for resetless clock domains
genlib: add Gray counter
graycounter: expose binary output
fhdl/specials/memory: do not write address register for async reads
genlib/fifo: add asynchronous FIFO
fhdl/verilog: recursive Special lowering
genlib/cdc: add NoRetiming
genlib/fifo: disable retiming on Gray counter outputs
prepare merge
Merge branch 'master' of git://github.com/milkymist/migen