Avoid loading readline in the kernel...
Avoid loading readline in the kernel
This bit of code was loading readline even when there was no need for
it. In a Qt console or notebook, try:
'readline' in sys.modules
'gnureadline' in sys.modules
I plan to rework this code more extensively once we've switched to
prompt_toolkit, but for now, this little fix should make the kernel
start slightly faster.
