first commit

.golangci.yml

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+run:
+  timeout: 5m
+  modules-download-mode: readonly
+
+linters:
+  enable:
+    - gofmt
+    - govet
+    - errcheck
+    - gosimple
+    - staticcheck
+    - unused
+    - gocyclo
+    - golint
+    - ineffassign
+    - misspell
+    - unconvert
+    - nakedret
+    - prealloc
+    - gocritic
+
+linters-settings:
+  gocyclo:
+    min-complexity: 15
+  golint:
+    min-confidence: 0.8
+  gofmt:
+    simplify: true
+
+issues:
+  exclude-use-default: false
+  exclude:
+    - "Error return value of .((os\\.)?std(out|err)\\..*|.*Close|.*Flush|os\\.Remove(All)?|.*print(f|ln)?|os\\.(Un)?Setenv). is not checked"
+    - "should have a package comment"
+    - "should have a comment"
+    - "comment on exported method"
+    - "don't use ALL_CAPS in Go names; use CamelCase"
+
+output:
+  format: colored-line-number
+  print-issued-lines: true
+  print-linter-name: true