Imports
- github.com/lib/pq
- github.com/prometheus/client_golang/prometheus
- github.com/prometheus/client_golang/prometheus/promhttp
- github.com/apex/httplog
- github.com/ContaAzul/postgresql_exporter/config
- github.com/ContaAzul/postgresql_exporter/gauges
- github.com/apex/log
- github.com/apex/log/handlers/logfmt