Handle Hugo version strings with patch level

Fixes #3025

commands/hugo.go

@@ -1001,15 +1001,7 @@ func (c *commandeer) isThemeVsHugoVersionMismatch() (mismatch bool, requiredMinV
 	config := tomlMeta.(map[string]interface{})
 
 	if minVersion, ok := config["min_version"]; ok {
-		switch minVersion.(type) {
-		case float32:
-			return helpers.HugoVersionNumber < minVersion.(float32), fmt.Sprint(minVersion)
-		case float64:
-			return helpers.HugoVersionNumber < minVersion.(float64), fmt.Sprint(minVersion)
-		default:
-			return
-		}
-
+		return helpers.CompareVersion(minVersion) > 0, fmt.Sprint(minVersion)
 	}
 
 	return

commands/new.go

@@ -314,7 +314,7 @@ description = ""
 homepage = "http://siteforthistheme.com/"
 tags = []
 features = []
-min_version = 0.19
+min_version = "0.19"
 
 [author]
   name = ""