--strip

[ijl]

This strips shared libraries through a link arg. It's a common enough case to merit its own flag, I think.

[konstin]

I didn't even know that this option existed, but it definitely should be supported!

I've compared the reduction from this and the last PR and the results are truly amazing - The new files are about 25x smaller than the old ones:

wheel	baseline	deflate	strip + deflate
get_fourtytwo-2.0.1-cp36-cp36m-manylinux1_x86_64.whl	2,8M	771K	102K
hello_world-0.1.0-py2.py3-none-manylinux1_x86_64.whl	3,9M	1,1M	180K
points-0.1.0-py2.py3-none-manylinux1_x86_64.whl	2,8M	752K	85K

Thank you!