[enh] use typing_extensions for Python 3.7

This lets the next commit make use of TypedDict & Literal which were only introduced in Python 3.8.
3 years ago · 8aef66b365
parent 7f89adc5f3
commit 8aef66b365
1 changed files with 1 additions and 0 deletions
--- a/requirements.txt
+++ b/requirements.txt
@ -15,3 +15,4 @@ langdetect==1.0.9
 setproctitle==1.2.2
 redis==4.1.1
 mistletoe==0.8.1
+typing_extensions==4.0.1