Python 3.5 fixes

`typing.Deque` was introduced in Python 3.6, so we can only use it when
we no longer support Blender 2.79.

Pipfile

@@ -20,6 +20,7 @@ sphinx-autobuild = "*"
 sphinx-rtd-theme = "*"
 twine = "*"
 responses = "*"
+pathlib2 = {version = "*",markers = "python_version < '3.6'"}
 
 [requires]
 python_version = "3.5"

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "f83b8983e69d5d799b27888b538a4a347eca2d4177ea59052be7ae976bee48d2"
+            "sha256": "ae59545d12df926a0c461047c2a5e10d7b26fb27e163f2b6f9e77f6172da9988"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -254,6 +254,15 @@
             ],
             "version": "==19.0"
         },
+        "pathlib2": {
+            "hashes": [
+                "sha256:25199318e8cc3c25dcb45cbe084cc061051336d5a9ea2a12448d3d8cb748f742",
+                "sha256:5887121d7f7df3603bca2f710e7219f3eca0eb69e0b7cc6e0a022e155ac931a7"
+            ],
+            "index": "pypi",
+            "markers": "python_version < '3.6'",
+            "version": "==2.3.3"
+        },
         "pathtools": {
             "hashes": [
                 "sha256:7c35c5421a39bb82e58018febd90e3b6e5db34c5443aaaf742b3f33d4655f1c0"
@@ -296,10 +305,10 @@
         },
         "pyflakes": {
             "hashes": [
-                "sha256:5e8c00e30c464c99e0b501dc160b13a14af7f27d4dffb529c556e30a159e231d",
-                "sha256:f277f9ca3e55de669fba45b7393a1449009cff5a37d1af10ebb76c52765269cd"
+                "sha256:17dbeb2e3f4d772725c777fabc446d5634d1038f234e77343108ce445ea69ce0",
+                "sha256:d976835886f8c5b31d47970ed689944a0262b5f3afa00a5a7b4dc81e5449f8a2"
             ],
-            "version": "==2.1.0"
+            "version": "==2.1.1"
         },
         "pygments": {
             "hashes": [

blender_asset_tracer/pack/shaman/transfer.py

@@ -182,7 +182,7 @@ class ShamanTransferrer(bat_transfer.FileTransferer):
 
     def _send_checkout_def_to_shaman(self, definition_file: bytes,
                                      allowed_relpaths: typing.Set[str]) \
-            -> typing.Optional[typing.Deque[str]]:
+            -> typing.Optional[collections.deque]:
         """Send the checkout definition file to the Shaman.
 
         :return: An iterable of paths (relative to the project root) that still
@@ -196,7 +196,7 @@ class ShamanTransferrer(bat_transfer.FileTransferer):
             self.error_set(msg)
             return None
 
-        to_upload = collections.deque()  # type: typing.Deque[str]
+        to_upload = collections.deque()  # type: collections.deque
         for line in resp.iter_lines():
             response, path = line.decode().split(' ', 1)
             self.log.debug('   %s: %s', response, path)
@@ -224,7 +224,7 @@ class ShamanTransferrer(bat_transfer.FileTransferer):
 
         return to_upload
 
-    def _upload_files(self, to_upload: typing.Deque[str]) -> typing.Set[str]:
+    def _upload_files(self, to_upload: collections.deque) -> typing.Set[str]:
         """Actually upload the files to Shaman.
 
         Returns the set of files that we did not upload.