Check error handling and common Go mistakes

The lint config keeps the standard linters and adds errorlint and
gocritic. Error checks accept wrapped errors, and common Go mistakes
fail the same check command as the existing code checks.

diff --git a/.golangci.yml b/.golangci.yml
new file mode 100644 (file)
index 0000000..082c4f4
--- /dev/null
+++ b/.golangci.yml
@@ -0,0 +1,7 @@
+version: "2"
+
+linters:
+  default: standard
+  enable:
+    - errorlint
+    - gocritic