Apache SINGA V3.2.0 release candidate 1

apache singa v3.2.0

apache singa v3.1.0

The second release candidate of 3.1.0

The first release candidate of 3.1.0

Rlease version 3.0.0

The third release candidate of 3.0.0

Second release candidate for v3.0.0

singa v3 first release candidate

Merge branch 'master' of https://gitbox.apache.org/repos/asf/incubato…

…r-singa