Downgrade python-future required version to 0.15.2

It works fine and this way python-future from Ubuntu 16.04 and 18.04 can be used.
2018-09-18 15:38:34 +03:00 · 2018-09-18 15:38:34 +03:00 · 9999720ed0
parent 3276a1316f
commit 9999720ed0
1 changed files with 1 additions and 1 deletions
--- a/requirements.txt
+++ b/requirements.txt
@ -6,4 +6,4 @@ setuptools
 # Please keep it as the first item of this list.
 #
 pyserial>=3.0
-future>=0.16.0
+future>=0.15.2