master
improve DeepCopy feature for bunch of components, especially the container and gtime (#1956)
version 2
version v2.3.0 (#2392)
copyright comment update
Improve the code coverage of the gvar module (#1982)
add golangci feature to guarantee codes quality (#2229)
Improved import, by group improt.
t.Assert(err, nil) -> t.AssertNil(err)