master
add golangci feature to guarantee codes quality (#2229)
improve package gerror, add HasCode/HasError function for package gerror (#2006)
add switch of brief stack for package `gerror` (#2153)
add Is/Equal/Unwrap functions for package gerror
remove repeated error stack file lines among stacks for package gerror (#2199)
Improved import, by group improt.
add example for package gerror
add ut cases for package gerror (#2304)