Fix dateparser py2 (#197)

* fix version of dateparser as 0.7.6

* Update HISTORY.md

Author: yuanqj

HISTORY.md

@@ -5,7 +5,7 @@
 **Implementations**
 - Add resources api
 - Update elasticsearch migration to use scroll
-- fix version of protobuf as 3.17.3 to keep compatible with Python 2
+- fix version of dependencies  to keep compatible with Python 2: protobuf<=3.17.3, dateparser<=0.7.6
 
 
 ### 0.6.57 (2021-09-09)

setup.py

@@ -29,9 +29,9 @@
 install_requires = []
 
 if sys.version_info[:2] == (2, 6):
-    install_requires = [ 'protobuf <= 3.4.0', 'enum34', 'futures' ]
+    install_requires = ['protobuf <= 3.4.0', 'enum34', 'futures']
 elif sys.version_info[0] == 2:
-    install_requires = ['protobuf <= 3.17.3', 'enum34', 'futures', 'dateparser']
+    install_requires = ['protobuf <= 3.17.3', 'enum34', 'futures', 'dateparser <= 0.7.6']
 elif sys.version_info[:2] == (3, 3):
     install_requires = ['protobuf>=3.4.0', 'enum34',  'dateparser']
 elif sys.version_info[0] == 3: