Update Pillow to 4.0.0, includes various security fixes.

Fixes #4194

requirements/compiled.txt

@@ -5,20 +5,19 @@ Jinja2==2.8.1 \
 # MarkupSafe is required by Jinja2
 MarkupSafe==0.23 \
     --hash=sha256:a4ec1aff59b95a14b45eb2e23761a0179e98319da5a7eb76b56ea8cdc7b871c3
-Pillow==3.3.0 \
-    --hash=sha256:783b3af062d402c3a57a73b5ce5ae3bb5941b21a3752ca54687a931e029523af \
-    --hash=sha256:d3c0476573bc0a8a59dbd998fa45ec462bdaa20940a242aa0fc7b9292eee1bfd \
-    --hash=sha256:66adf2b921f602643c38e277b578c8dad745b10b059c1502cfa58dbd58890bb6 \
-    --hash=sha256:bc7abf459b578f8cb3670476ccee52e8f10099a29101371f5a6912387eadf6b6 \
-    --hash=sha256:0878b067c527a2e654d41348da5c091231e790f418107f90ced25f40a904ca41 \
-    --hash=sha256:1462aab6b294bc7bb01611a5273dae335b5d2488586c86d57ec2f1a4e93872b9 \
-    --hash=sha256:18ed8d36eefbb617af0e297d2ab84abf5d658013142c381157c5f7a0f05f7627 \
-    --hash=sha256:bcb424fd6c75df625b09580feb7eac2e77b0502f59d195102c0655fdf91397ed \
-    --hash=sha256:e8175bfd3a26371a3e675ab2c0831e5f7f6d32c08778027d630e12c653f52a15 \
-    --hash=sha256:031e7c9c885a4f343d1ad366c7fd2340449dc70318acb4a28d6411994f0accd1 \
-    --hash=sha256:fb68a8221e1e964b7d6e99871ec696479c974cb970a625f46f8627816c554a9f \
-    --hash=sha256:818902176f255467a4b7172564ae85001c6683a3ddc17eb2dbdc7c3775940e96 \
-    --hash=sha256:6ac87ba1e63cbd11c9e34b5e8e962ddd0b0869d8fedafeb2f7e6d049e9153027
+Pillow==4.0.0 \
+    --hash=sha256:de009e7077c56e3f5d1369e0bd66377e2b53d6705790193c595fc7befd95a491 \
+    --hash=sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 \
+    --hash=sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 \
+    --hash=sha256:43277035bb3054a6c02b8be3c743cd44803d9bcd1db35e1608bec21b4eff7869 \
+    --hash=sha256:3591a273b70fed23a49b3896dc0d9727cb802a80c58737d7244b49341ed47acf \
+    --hash=sha256:a51a91962966efe8872b624ec38dae556c50ca3a4a179dbb322f930146760890 \
+    --hash=sha256:a57f32a2f09ed61800e687aec0b2eebb095499116f50eff99e27e03ed9a8d776 \
+    --hash=sha256:22167c477cceeb0d0a078eb8ba5c76ecbde44d7e88d6e6caafadaba0c135207b \
+    --hash=sha256:f466cd795d0667b278752b9822565f74da5283fcb4325a065cd39f3f3efb00eb \
+    --hash=sha256:ee26d2d7e7e300f76ba7b796014c04011394d0c4a5ed9a288264a3e443abca50 \
+    --hash=sha256:1d3629a17d9da641912d1ed47d0850d79412e8d28e2703b2fb0b152073ceab55 \
+    --hash=sha256:d33d4ffd465ba041136c6c2c46c2dc2da4b0b6a8806a4c06aebbb1c32a2e6383
 # lxml is required by pyquery
 lxml==3.6.0 \
     --hash=sha256:8fdfeea3f1854bfd117bf0a1f13e14c3377bf14c1b7191f497f368df08dcbb55 \