Pin dependencies (#130)

* Pin dependencies

* removed boto

Co-authored-by: Allen Goodman <[email protected]>

Author: David Stirling

setup.py

@@ -15,12 +15,11 @@
     description="Read and write life sciences file formats",
     extras_require={
         "test": [
-            "pytest"
+            "pytest>=3.3.2,<4"
         ]
     },
     install_requires=[
-        "boto3",
-        "future",
+        "future>=0.18.2",
         "python-javabridge>=4.0.0rc2"
     ],
     license="GPL License",