fix(pkg/db): create or upgrade postgres schema based on semver

cmd/humidity/humidity.go

@@ -1,12 +1,17 @@
 package humidity
 
 import (
+	"github.com/Masterminds/semver"
 	"github.com/spf13/cobra"
 )
 
-var compression bool
-var configFile *string
-var round float64
+var (
+	compression bool
+	configFile  *string
+	round       float64
+
+	version *semver.Version
+)
 
 var humidityCmd = &cobra.Command{
 	Use:   "humidity",
@@ -14,8 +19,9 @@ var humidityCmd = &cobra.Command{
 }
 
 // Execute a
-func InitCmd(cmd *cobra.Command, cnfFile *string) {
+func InitCmd(cmd *cobra.Command, cnfFile *string, sversion *semver.Version) {
 	configFile = cnfFile
+	version = sversion
 
 	cmd.AddCommand(humidityCmd)