Update numpy version (#11)

* Update numpy version

* Test numpy 1.19

* Test numpy 1.19

* Test numpy 1.19

* Test numpy 1.19

* Test numpy 1.19

* Enable py3*

Merge pull request BVLC#5530 from willyd/nccl-py3

Explicit std::string to bp::object conversion

Merge pull request BVLC#5296 from shelhamer/rc5

version bump: rc5

Merge pull request BVLC#5198 from longjon/config-backslash

Remove trailing backslash on comment in Makefile.config.example

Merge pull request BVLC#3587 from junshi15/distribute_proto

Include proto definition in distribute dir

Merge pull request BVLC#1921 from shelhamer/fix-tool-linking

[build] fix dynamic linking of tools

Merge pull request BVLC#1112 from BVLC/next

Next: release candidate

Merge pull request BVLC#880 from BVLC/next

Next: 0.9999

follow-up on BVLC#443 to invert k channels (instead of 3)

Merge pull request BVLC#429 from shelhamer/next

Next: 0.999