prometheus-operator-app release v0.2.0

Changed

• Add Kubernetes 1.16 support
• Update Prometheus Operator to 0.35.0
• Update Prometheus to 2.15.2
• Update Alert manager to 0.19.0
• Update Grafana chart to 4.2.3
• Update kube-state-metrics chart to 2.4.1
• Update prometheus-node-exporter chart to 1.8.1