Revert "Try removing feather"

This reverts commit f55a827.

Author: TomAugspurger

ci/azure-windows-36.yaml

@@ -6,6 +6,7 @@ dependencies:
   - blosc
   - bottleneck
   - fastparquet
+  - feather-format
   - matplotlib
   - numexpr
   - numpy=1.14*
@@ -16,6 +17,7 @@ dependencies:
   - python=3.6.*
   - pytz
   - scipy
+  - thrift=0.10*
   - xlrd
   - xlsxwriter
   - xlwt