Switch to multiformats-cid

Since py-cid is deprecated and archived, use a library that is still
maintained.
Addresses: filips123#1

content_hash/decodes/b58_multi_hash.py

@@ -1,7 +1,7 @@
 """Decode module for B58 multi hash."""
 
-from cid import make_cid
 import multihash
+from multiformats_cid import make_cid
 
 
 def decode(value):

content_hash/decodes/hex_multi_hash.py

@@ -1,7 +1,7 @@
 """Decode module for HEX multi hash."""
 
-from cid import make_cid
 import multihash
+from multiformats_cid import make_cid
 
 
 def decode(value):

content_hash/encodes/ipfs.py

@@ -1,7 +1,8 @@
 """Encode module for IPFS."""
 
-from cid import make_cid
 import multihash
+from multiformats_cid import make_cid
+
 
 def encode(value):
     """

content_hash/encodes/swarm.py

@@ -1,7 +1,8 @@
 """Encode module for Swarm."""
 
-from cid import make_cid
 import multihash
+from multiformats_cid import make_cid
+
 
 def encode(value):
     """

setup.py

@@ -1,5 +1,6 @@
 from setuptools import setup
 
+
 def readme():
     with open('README.md') as f:
             return f.read()
@@ -21,7 +22,7 @@ def readme():
     },
 
     install_requires = [
-        'py-cid>=0.3.0,<0.4.0',
+        'py-multiformats-cid',
         'py-multicodec>=0.2.1,<0.3.0',
         'py-multihash>=0.2.3,<0.3.0',
     ],
@@ -49,6 +50,4 @@ def readme():
         'Topic :: Software Development :: Libraries',
         'Topic :: Utilities',
     ],
-
-    include_package_data = True,
 )