generic_platform: fix IO signal set when using existing record objects
generic_platform: add name
add README, LICENSE and gitignore
generic_platform: prefix subsignals
corelogic -> genlib
generic_platform/get_verilog: pass additional args to verilog.convert
xilinx_ise: disable SRL extraction on synchronizers
Use new 'specials' API
xilinx_ise: import Instance
xilinx_ise: add lock cycle to bitgen
platforms/m1: add video mixer extension board
generic_platform: implicit get_fragment
CRG: use new Module API
CRG: support reset inversion
xilinx_ise/CRG_SE: reset inversion support
Added support for Altera Quartus (by Florent Kermarrec)
Added platform file for DE0 Nano (by Florent Kermarrec)
altera_quartus, de0nano: add copyright notices
New clock_domain API
MultiReg: remove idomain