fix region constant

Author: franciscao633

src/lib/constants.ts

@@ -33,17 +33,7 @@ export const FILTER_REFERRERS = 'filter-referrers';
 export const FILTER_PAGES = 'filter-pages';
 
 export const UNIT_TYPES = ['year', 'month', 'hour', 'day', 'minute'];
-export const EVENT_COLUMNS = [
-  'url',
-  'entry',
-  'exit',
-  'referrer',
-  'title',
-  'query',
-  'event',
-  'tag',
-  'region',
-];
+export const EVENT_COLUMNS = ['url', 'entry', 'exit', 'referrer', 'title', 'query', 'event', 'tag'];
 
 export const SESSION_COLUMNS = [
   'browser',
@@ -53,6 +43,7 @@ export const SESSION_COLUMNS = [
   'language',
   'country',
   'city',
+  'region',
   'host',
 ];