diff --git a/Pipfile.lock b/Pipfile.lock
index 3068025..cedba4e 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -16,17 +16,16 @@
     "default": {
         "certifi": {
             "hashes": [
-                "sha256:1a4995114262bffbc2413b159f2a1a480c969de6e6eb13ee966d470af86af59c",
-                "sha256:719a74fb9e33b9bd44cc7f3a8d94bc35e4049deebe19ba7d8e108280cfd59830"
+                "sha256:2bbf76fd432960138b3ef6dda3dde0544f27cbf8546c458e60baf371917ba9ee",
+                "sha256:50b1e4f8446b06f41be7dd6338db18e0990601dce795c2b1686458aa7e8fa7d8"
             ],
-            "version": "==2020.12.5"
+            "version": "==2021.5.30"
         },
         "chardet": {
             "hashes": [
                 "sha256:0d6f53a15db4120f2b08c94f11e7d93d2c911ee118b6b30a04ec3ee8310179fa",
                 "sha256:f864054d66fd9118f2e67044ac8981a54775ec5b67aed0441892edb553d21da5"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
             "version": "==4.0.0"
         },
         "idna": {
@@ -34,7 +33,6 @@
                 "sha256:b307872f855b18632ce0c21c5e45be78c0ea7ae4c15c828c20788b26921eb3f6",
                 "sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==2.10"
         },
         "requests": {
@@ -42,16 +40,14 @@
                 "sha256:27973dd4a904a4f13b263a19c866c13b92a39ed1c964655f025f3f8d3d75b804",
                 "sha256:c210084e36a42ae6b9219e00e48287def368a26d03a048ddad7bfee44f75871e"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
             "version": "==2.25.1"
         },
         "six": {
             "hashes": [
-                "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
-                "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
+                "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
+                "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==1.15.0"
+            "version": "==1.16.0"
         },
         "spotipy": {
             "hashes": [
@@ -64,11 +60,11 @@
         },
         "urllib3": {
             "hashes": [
-                "sha256:19188f96923873c92ccb987120ec4acaa12f0461fa9ce5d3d0772bc965a39e08",
-                "sha256:d8ff90d979214d7b4f8ce956e80f4028fc6860e4431f731ea4a8c08f23f99473"
+                "sha256:753a0374df26658f99d826cfe40394a686d05985786d946fbe4165b5148f5a7c",
+                "sha256:a7acd0977125325f516bda9735fa7142b909a8d01e8b2e4c8108d0984e6e0098"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'",
-            "version": "==1.26.2"
+            "index": "pypi",
+            "version": "==1.26.5"
         }
     },
     "develop": {
@@ -81,10 +77,10 @@
         },
         "decorator": {
             "hashes": [
-                "sha256:41fa54c2a0cc4ba648be4fd43cff00aedf5b9465c9bf18d64325bc225f08f760",
-                "sha256:e3a62f0520172440ca0dcc823749319382e377f37f140a0b99ef45fecb84bfe7"
+                "sha256:6e5c199c16f7a9f0e3a61a4a54b3d27e7dad0dbdde92b944426cb20914376323",
+                "sha256:72ecfba4320a893c53f9706bebb2d55c270c1e51a28789361aa93e4a21319ed5"
             ],
-            "version": "==4.4.2"
+            "version": "==5.0.9"
         },
         "ipdb": {
             "hashes": [
@@ -95,11 +91,10 @@
         },
         "ipython": {
             "hashes": [
-                "sha256:c987e8178ced651532b3b1ff9965925bfd445c279239697052561a9ab806d28f",
-                "sha256:cbb2ef3d5961d44e6a963b9817d4ea4e1fa2eb589c371a470fed14d8d40cbd6a"
+                "sha256:a171caa3d3d4c819a1c0742e3abecfd5a2b8ab525ca1c9f114b40b76b0679ab1",
+                "sha256:f86788eef439891438af3498525094cc2acbdbea4f2aa2f8895782d4ff471341"
             ],
-            "markers": "python_version >= '3.7'",
-            "version": "==7.19.0"
+            "version": "==7.24.0"
         },
         "ipython-genutils": {
             "hashes": [
@@ -113,16 +108,21 @@
                 "sha256:18456d83f65f400ab0c2d3319e48520420ef43b23a086fdc05dff34132f0fb93",
                 "sha256:92550a404bad8afed881a137ec9a461fed49eca661414be45059329614ed0707"
             ],
-            "markers": "python_version >= '3.6'",
             "version": "==0.18.0"
         },
+        "matplotlib-inline": {
+            "hashes": [
+                "sha256:5cf1176f554abb4fa98cb362aa2b55c500147e4bdbb07e3fda359143e1da0811",
+                "sha256:f41d5ff73c9f5385775d5c0bc13b424535c8402fe70ea8210f93e11f3683993e"
+            ],
+            "version": "==0.1.2"
+        },
         "parso": {
             "hashes": [
-                "sha256:15b00182f472319383252c18d5913b69269590616c947747bc50bf4ac768f410",
-                "sha256:8519430ad07087d4c997fda3a7918f7cfa27cb58972a8c89c2a0295a1c940e9e"
+                "sha256:12b83492c6239ce32ff5eed6d3639d6a536170723c6f3f1506869f1ace413398",
+                "sha256:a8c4922db71e4fdb90e0d0bc6e50f9b273d3397925e5e60a717e719201778d22"
             ],
-            "markers": "python_version >= '3.6'",
-            "version": "==0.8.1"
+            "version": "==0.8.2"
         },
         "pexpect": {
             "hashes": [
@@ -141,11 +141,10 @@
         },
         "prompt-toolkit": {
             "hashes": [
-                "sha256:ac329c69bd8564cb491940511957312c7b8959bb5b3cf3582b406068a51d5bb7",
-                "sha256:b8b3d0bde65da350290c46a8f54f336b3cbf5464a4ac11239668d986852e79d5"
+                "sha256:bf00f22079f5fadc949f42ae8ff7f05702826a97059ffcc6281036ad40ac6f04",
+                "sha256:e1b4f11b9336a28fa11810bc623c357420f69dfdb6d2dac41ca2c21a55c033bc"
             ],
-            "markers": "python_full_version >= '3.6.1'",
-            "version": "==3.0.10"
+            "version": "==3.0.18"
         },
         "ptyprocess": {
             "hashes": [
@@ -156,18 +155,16 @@
         },
         "pygments": {
             "hashes": [
-                "sha256:ccf3acacf3782cbed4a989426012f1c535c9a90d3a7fc3f16d231b9372d2b716",
-                "sha256:f275b6c0909e5dafd2d6269a656aa90fa58ebf4a74f8fcf9053195d226b24a08"
+                "sha256:a18f47b506a429f6f4b9df81bb02beab9ca21d0a5fee38ed15aef65f0545519f",
+                "sha256:d66e804411278594d764fc69ec36ec13d9ae9147193a1740cd34d272ca383b8e"
             ],
-            "markers": "python_version >= '3.5'",
-            "version": "==2.7.3"
+            "version": "==2.9.0"
         },
         "traitlets": {
             "hashes": [
                 "sha256:178f4ce988f69189f7e523337a3e11d91c786ded9360174a3d9ca83e79bc5396",
                 "sha256:69ff3f9d5351f31a7ad80443c2674b7099df13cc41fc5fa6e2f6d3b0330b0426"
             ],
-            "markers": "python_version >= '3.7'",
             "version": "==5.0.5"
         },
         "wcwidth": {