Update tskit requirements to >= 0.2.1

hyanwong · hyanwong · commit 045c26cb0d9a · 2019-08-31T13:19:59.000+01:00
diff --git a/setup.py b/setup.py
@@ -49,7 +49,7 @@ def finalize_options(self):
         "tqdm",
         "humanize",
         "daiquiri",
-        "tskit",
+        "tskit>=0.2.1",
         "numcodecs>=0.6",
         "zarr>=2.2",
         "lmdb",
