Make panic messages look nicer

Cred to @daniejstriata for this flag:
#201 (comment)

build.sh

@@ -25,7 +25,7 @@ fi
 
 # This line must be last in the script so that its return code
 # propagates properly to its caller
-go build -ldflags="-s -w -X main.versionString=${VERSION}" -o "${BINARY}"
+go build -trimpath -ldflags="-s -w -X main.versionString=${VERSION}" -o "${BINARY}"
 
 # Alternative build line, if you want to attach to the running process in the Go debugger:
 # go build -ldflags="-X main.versionString=${VERSION}" -gcflags='-N -l' -o "${BINARY}"