Add converting sqlite values

pkg/migration/20200621214452.go

@@ -69,6 +69,11 @@ func init() {
 					}
 				case schemas.SQLITE:
 					// welp
+					// sqlite will need a long string with all table modifications
+					// But at least we can do the conversion of data with it
+					sql = []string{
+						"UPDATE " + table + " SET " + colFinal + " = DATETIME(" + colFinal + ", 'unixepoch', 'localtime')",
+					}
 				default:
 					return fmt.Errorf("unsupported dbms: %s", tx.Dialect().URI().DBType)
 				}