Fixes #242: Add COCOTB_ATTACH environment variable to delay initialisation for debug
Fixes #242: Add COCOTB_ATTACH environment variable to delay initialisation for debug

mkreider/cocotb2,mkreider/cocotb2,stuarthodgson/cocotb,mkreider/cocotb2,stuarthodgson/cocotb,stuarthodgson/cocotb