GitLab

1. Use []byte instead of interface{}.
2. Handle rename errors.
3. Correctly temporary files.

(and make Close threadsafe)

fix a goroutine leak killing the gateways

Closing a query early could leak the query goroutine if the buffer isn't large
enough to fit the rest of the query.

add GetSize function

check error before defer-removing disk usage file

use standard CI script

all: gofmt

Run standard gofmt command on project root.

gx update go-log

Use JSON file for `diskUsage.cache` and include note on accuracy of value

Also sync contents of diskUsage.cache to disk after the initial calculation
and during shutdown.