diff --git a/Pipfile b/Pipfile
new file mode 100644
index 0000000..756dc94
--- /dev/null
+++ b/Pipfile
@@ -0,0 +1,11 @@
+[[source]]
+name = "pypi"
+url = "https://pypi.org/simple"
+verify_ssl = true
+
+[dev-packages]
+maturin = ">=0.7.7"
+pytest = ">=4.0"
+
+[requires]
+python_version = "3.8"
diff --git a/Pipfile.lock b/Pipfile.lock
new file mode 100644
index 0000000..4ae5d58
--- /dev/null
+++ b/Pipfile.lock
@@ -0,0 +1,104 @@
+{
+    "_meta": {
+        "hash": {
+            "sha256": "7438584c31033535a2b8484203f99360422c2bb8fdb4ce021ff4fc1cadaf55a3"
+        },
+        "pipfile-spec": 6,
+        "requires": {
+            "python_version": "3.8"
+        },
+        "sources": [
+            {
+                "name": "pypi",
+                "url": "https://pypi.org/simple",
+                "verify_ssl": true
+            }
+        ]
+    },
+    "default": {},
+    "develop": {
+        "attrs": {
+            "hashes": [
+                "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c",
+                "sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72"
+            ],
+            "version": "==19.3.0"
+        },
+        "maturin": {
+            "hashes": [
+                "sha256:2533c648aa8fa19f7a9d4f62282b4adce2f9c07c49f512005f92911be767555e",
+                "sha256:4fd7fcf4e40e984274dc9caf80c08fa16a6c7c1f4ca1f694ba2ac3802b7340aa",
+                "sha256:5e6390245a023cbdca39d9276035fdee4d892b44d3ab798ccf2c3443d87e3f98",
+                "sha256:7f7f04de2acf379b1ff8993747f11bfb60760c69caf8c43414212cf7cc4b07ef",
+                "sha256:87a3d9a94f9c3b8d3ecc57017cdae2b3f1e0f6bfc851509f0b53c2486f312dcc",
+                "sha256:aa474d70630833349dac090306fd51a8af2df88080cea74ea4d831b40616ea41"
+            ],
+            "index": "pypi",
+            "version": "==0.7.7"
+        },
+        "more-itertools": {
+            "hashes": [
+                "sha256:b84b238cce0d9adad5ed87e745778d20a3f8487d0f0cb8b8a586816c7496458d",
+                "sha256:c833ef592a0324bcc6a60e48440da07645063c453880c9477ceb22490aec1564"
+            ],
+            "version": "==8.0.2"
+        },
+        "packaging": {
+            "hashes": [
+                "sha256:28b924174df7a2fa32c1953825ff29c61e2f5e082343165438812f00d3a7fc47",
+                "sha256:d9551545c6d761f3def1677baf08ab2a3ca17c56879e70fecba2fc4dde4ed108"
+            ],
+            "version": "==19.2"
+        },
+        "pluggy": {
+            "hashes": [
+                "sha256:15b2acde666561e1298d71b523007ed7364de07029219b604cf808bfa1c765b0",
+                "sha256:966c145cd83c96502c3c3868f50408687b38434af77734af1e9ca461a4081d2d"
+            ],
+            "version": "==0.13.1"
+        },
+        "py": {
+            "hashes": [
+                "sha256:5e27081401262157467ad6e7f851b7aa402c5852dbcb3dae06768434de5752aa",
+                "sha256:c20fdd83a5dbc0af9efd622bee9a5564e278f6380fffcacc43ba6f43db2813b0"
+            ],
+            "version": "==1.8.1"
+        },
+        "pyparsing": {
+            "hashes": [
+                "sha256:4c830582a84fb022400b85429791bc551f1f4871c33f23e44f353119e92f969f",
+                "sha256:c342dccb5250c08d45fd6f8b4a559613ca603b57498511740e65cd11a2e7dcec"
+            ],
+            "version": "==2.4.6"
+        },
+        "pytest": {
+            "hashes": [
+                "sha256:6b571215b5a790f9b41f19f3531c53a45cf6bb8ef2988bc1ff9afb38270b25fa",
+                "sha256:e41d489ff43948babd0fad7ad5e49b8735d5d55e26628a58673c39ff61d95de4"
+            ],
+            "index": "pypi",
+            "version": "==5.3.2"
+        },
+        "six": {
+            "hashes": [
+                "sha256:1f1b7d42e254082a9db6279deae68afb421ceba6158efa6131de7b3003ee93fd",
+                "sha256:30f610279e8b2578cab6db20741130331735c781b56053c59c4076da27f06b66"
+            ],
+            "version": "==1.13.0"
+        },
+        "toml": {
+            "hashes": [
+                "sha256:229f81c57791a41d65e399fc06bf0848bab550a9dfd5ed66df18ce5f05e73d5c",
+                "sha256:235682dd292d5899d361a811df37e04a8828a5b1da3115886b73cf81ebc9100e"
+            ],
+            "version": "==0.10.0"
+        },
+        "wcwidth": {
+            "hashes": [
+                "sha256:8fd29383f539be45b20bd4df0dc29c20ba48654a41e661925e612311e9f3c603",
+                "sha256:f28b3e8a6483e5d49e7f8949ac1a78314e740333ae305b4ba5defd3e74fb37a8"
+            ],
+            "version": "==0.1.8"
+        }
+    }
+}