readfile: add a readfile_filter option

* Add a readfile_filter option that filters flows on read.
* Adjust test suite for asyncio.
* Add asynctest as a dev dependency.

1 files changed, 1 insertions, 0 deletions

diff --git a/setup.py b/setup.py
index 3e914847..712ad5d2 100644
--- a/setup.py
+++ b/setup.py
@@ -85,6 +85,7 @@ setup(
             "pydivert>=2.0.3,<2.2",
         ],
         'dev': [
+            "asynctest>=0.12.0",
             "flake8>=3.5, <3.6",
             "Flask>=0.10.1, <0.13",
             "mypy>=0.580,<0.581",