Merge pull request #45 from gcpug/upgrade-vendors

module: upgrade each vendors

Merge pull request #42 from gcpug/release-v0.5.2

Release v0.5.2

Merge pull request #41 from gcpug/release-v0.5.1

Release v0.5.1

Merge pull request #38 from gcpug/feat-plugin

add plugin for golangci-lint

Merge pull request #36 from gcpug/fix-circleci-go1.14.4

Update Go image of CircleCI to go1.14.4

Merge pull request #31 from gcpug/fix-ignore

Fix ignore comment bug

Merge pull request #28 from gcpug/fix-fallback-path

Remove default case for unexpected types

Merge pull request #24 from gcpug/fix-stackoverflow

Fix stack overflow

Merge pull request #21 from gcpug/fix-grpcstatus

Fix for GRPCStatus

Merge pull request #19 from gcpug/add-wraperr

Add wraperr