Refactor deps

Author: standy66

setup.py

@@ -15,10 +15,9 @@ def main():
         python_requires=">=3.6.0",
         install_requires=[
             "autopep8",
-            "objgraph",
             "h2",
             "protobuf",
-            "curio~=0.9.0",
+            "curio",
         ],
         entry_points={'console_scripts': console_scripts},
         setup_requires=["pytest-runner"],

src/purerpc/utils.py

@@ -1,7 +1,6 @@
 import platform
 import curio
 import pdb
-import objgraph
 import math
 
 
@@ -20,6 +19,7 @@ def get_linux_kernel_version():
 
 async def print_memory_growth_statistics(interval_sec=10.0, set_pdb_trace_every=math.inf):
     num_iters = 0
+    import objgraph
     while True:
         num_iters += 1
         await curio.sleep(interval_sec)