Remove Python 2.7 support. (#5425)

* remove 2.7 from CI and publishing

* fill out classifiers and also make it not be installed on 3.5

* some minor bumps so that the old deps work on python 3.5

1 files changed, 2 insertions, 2 deletions

diff --git a/tox.ini b/tox.ini

index 543b232ae7..0c4d562766 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = packaging, py27, py36, pep8, check_isort
+envlist = packaging, py35, py36, py37, pep8, check_isort
 
 [base]
 deps =
@@ -79,7 +79,7 @@ usedevelop=true
 
 # A test suite for the oldest supported versions of Python libraries, to catch
 # any uses of APIs not available in them.
-[testenv:py27-old]
+[testenv:py35-old]
 skip_install=True
 deps =
     # Old automat version for Twisted