diff --git a/poetry.lock b/poetry.lock
index 9f17fc7..8e454f7 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -475,7 +475,7 @@ test = ["pytest", "requests"]
 
 [[package]]
 name = "lxml"
-version = "4.5.2"
+version = "4.6.1"
 description = "Powerful and Pythonic XML processing library combining libxml2/libxslt with the ElementTree API."
 category = "dev"
 optional = false
@@ -505,8 +505,8 @@ python-versions = "*"
 
 [[package]]
 name = "nbclient"
-version = "0.5.0"
-description = "A client library for executing notebooks. Formally nbconvert's ExecutePreprocessor."
+version = "0.5.1"
+description = "A client library for executing notebooks. Formerly nbconvert's ExecutePreprocessor."
 category = "main"
 optional = false
 python-versions = ">=3.6"
@@ -920,7 +920,7 @@ test = ["pytest"]
 
 [[package]]
 name = "urllib3"
-version = "1.25.10"
+version = "1.25.11"
 description = "HTTP library with thread-safe connection pooling, file post, and more."
 category = "main"
 optional = false
@@ -928,7 +928,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
 
 [package.extras]
 brotli = ["brotlipy (>=0.6.0)"]
-secure = ["certifi", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "pyOpenSSL (>=0.14)", "ipaddress"]
+secure = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "certifi", "ipaddress"]
 socks = ["PySocks (>=1.5.6,<1.5.7 || >1.5.7,<2.0)"]
 
 [[package]]
@@ -1169,37 +1169,42 @@ jupyterlab-server = [
     {file = "jupyterlab_server-1.2.0.tar.gz", hash = "sha256:5431d9dde96659364b7cc877693d5d21e7b80cea7ae3959ecc2b87518e5f5d8c"},
 ]
 lxml = [
-    {file = "lxml-4.5.2-cp27-cp27m-macosx_10_9_x86_64.whl", hash = "sha256:74f48ec98430e06c1fa8949b49ebdd8d27ceb9df8d3d1c92e1fdc2773f003f20"},
-    {file = "lxml-4.5.2-cp27-cp27m-manylinux1_i686.whl", hash = "sha256:e70d4e467e243455492f5de463b72151cc400710ac03a0678206a5f27e79ddef"},
-    {file = "lxml-4.5.2-cp27-cp27m-manylinux1_x86_64.whl", hash = "sha256:7ad7906e098ccd30d8f7068030a0b16668ab8aa5cda6fcd5146d8d20cbaa71b5"},
-    {file = "lxml-4.5.2-cp27-cp27m-win32.whl", hash = "sha256:92282c83547a9add85ad658143c76a64a8d339028926d7dc1998ca029c88ea6a"},
-    {file = "lxml-4.5.2-cp27-cp27m-win_amd64.whl", hash = "sha256:05a444b207901a68a6526948c7cc8f9fe6d6f24c70781488e32fd74ff5996e3f"},
-    {file = "lxml-4.5.2-cp27-cp27mu-manylinux1_i686.whl", hash = "sha256:94150231f1e90c9595ccc80d7d2006c61f90a5995db82bccbca7944fd457f0f6"},
-    {file = "lxml-4.5.2-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:bea760a63ce9bba566c23f726d72b3c0250e2fa2569909e2d83cda1534c79443"},
-    {file = "lxml-4.5.2-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:c3f511a3c58676147c277eff0224c061dd5a6a8e1373572ac817ac6324f1b1e0"},
-    {file = "lxml-4.5.2-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:59daa84aef650b11bccd18f99f64bfe44b9f14a08a28259959d33676554065a1"},
-    {file = "lxml-4.5.2-cp35-cp35m-manylinux2014_aarch64.whl", hash = "sha256:c9d317efde4bafbc1561509bfa8a23c5cab66c44d49ab5b63ff690f5159b2304"},
-    {file = "lxml-4.5.2-cp35-cp35m-win32.whl", hash = "sha256:9dc9006dcc47e00a8a6a029eb035c8f696ad38e40a27d073a003d7d1443f5d88"},
-    {file = "lxml-4.5.2-cp35-cp35m-win_amd64.whl", hash = "sha256:08fc93257dcfe9542c0a6883a25ba4971d78297f63d7a5a26ffa34861ca78730"},
-    {file = "lxml-4.5.2-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:121b665b04083a1e85ff1f5243d4a93aa1aaba281bc12ea334d5a187278ceaf1"},
-    {file = "lxml-4.5.2-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:5591c4164755778e29e69b86e425880f852464a21c7bb53c7ea453bbe2633bbe"},
-    {file = "lxml-4.5.2-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:cc411ad324a4486b142c41d9b2b6a722c534096963688d879ea6fa8a35028258"},
-    {file = "lxml-4.5.2-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:1fa21263c3aba2b76fd7c45713d4428dbcc7644d73dcf0650e9d344e433741b3"},
-    {file = "lxml-4.5.2-cp36-cp36m-win32.whl", hash = "sha256:786aad2aa20de3dbff21aab86b2fb6a7be68064cbbc0219bde414d3a30aa47ae"},
-    {file = "lxml-4.5.2-cp36-cp36m-win_amd64.whl", hash = "sha256:e1cacf4796b20865789083252186ce9dc6cc59eca0c2e79cca332bdff24ac481"},
-    {file = "lxml-4.5.2-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:80a38b188d20c0524fe8959c8ce770a8fdf0e617c6912d23fc97c68301bb9aba"},
-    {file = "lxml-4.5.2-cp37-cp37m-manylinux1_i686.whl", hash = "sha256:ecc930ae559ea8a43377e8b60ca6f8d61ac532fc57efb915d899de4a67928efd"},
-    {file = "lxml-4.5.2-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:a76979f728dd845655026ab991df25d26379a1a8fc1e9e68e25c7eda43004bed"},
-    {file = "lxml-4.5.2-cp37-cp37m-manylinux2014_aarch64.whl", hash = "sha256:cfd7c5dd3c35c19cec59c63df9571c67c6d6e5c92e0fe63517920e97f61106d1"},
-    {file = "lxml-4.5.2-cp37-cp37m-win32.whl", hash = "sha256:5a9c8d11aa2c8f8b6043d845927a51eb9102eb558e3f936df494e96393f5fd3e"},
-    {file = "lxml-4.5.2-cp37-cp37m-win_amd64.whl", hash = "sha256:4b4a111bcf4b9c948e020fd207f915c24a6de3f1adc7682a2d92660eb4e84f1a"},
-    {file = "lxml-4.5.2-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:5dd20538a60c4cc9a077d3b715bb42307239fcd25ef1ca7286775f95e9e9a46d"},
-    {file = "lxml-4.5.2-cp38-cp38-manylinux1_i686.whl", hash = "sha256:2b30aa2bcff8e958cd85d907d5109820b01ac511eae5b460803430a7404e34d7"},
-    {file = "lxml-4.5.2-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:aa8eba3db3d8761db161003e2d0586608092e217151d7458206e243be5a43843"},
-    {file = "lxml-4.5.2-cp38-cp38-manylinux2014_aarch64.whl", hash = "sha256:8f0ec6b9b3832e0bd1d57af41f9238ea7709bbd7271f639024f2fc9d3bb01293"},
-    {file = "lxml-4.5.2-cp38-cp38-win32.whl", hash = "sha256:107781b213cf7201ec3806555657ccda67b1fccc4261fb889ef7fc56976db81f"},
-    {file = "lxml-4.5.2-cp38-cp38-win_amd64.whl", hash = "sha256:f161af26f596131b63b236372e4ce40f3167c1b5b5d459b29d2514bd8c9dc9ee"},
-    {file = "lxml-4.5.2.tar.gz", hash = "sha256:cdc13a1682b2a6241080745b1953719e7fe0850b40a5c71ca574f090a1391df6"},
+    {file = "lxml-4.6.1-cp27-cp27m-macosx_10_9_x86_64.whl", hash = "sha256:4b7572145054330c8e324a72d808c8c8fbe12be33368db28c39a255ad5f7fb51"},
+    {file = "lxml-4.6.1-cp27-cp27m-manylinux1_i686.whl", hash = "sha256:302160eb6e9764168e01d8c9ec6becddeb87776e81d3fcb0d97954dd51d48e0a"},
+    {file = "lxml-4.6.1-cp27-cp27m-manylinux1_x86_64.whl", hash = "sha256:d4ad7fd3269281cb471ad6c7bafca372e69789540d16e3755dd717e9e5c9d82f"},
+    {file = "lxml-4.6.1-cp27-cp27m-win32.whl", hash = "sha256:189ad47203e846a7a4951c17694d845b6ade7917c47c64b29b86526eefc3adf5"},
+    {file = "lxml-4.6.1-cp27-cp27m-win_amd64.whl", hash = "sha256:56eff8c6fb7bc4bcca395fdff494c52712b7a57486e4fbde34c31bb9da4c6cc4"},
+    {file = "lxml-4.6.1-cp27-cp27mu-manylinux1_i686.whl", hash = "sha256:23c83112b4dada0b75789d73f949dbb4e8f29a0a3511647024a398ebd023347b"},
+    {file = "lxml-4.6.1-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:0e89f5d422988c65e6936e4ec0fe54d6f73f3128c80eb7ecc3b87f595523607b"},
+    {file = "lxml-4.6.1-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:2358809cc64394617f2719147a58ae26dac9e21bae772b45cfb80baa26bfca5d"},
+    {file = "lxml-4.6.1-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:be1ebf9cc25ab5399501c9046a7dcdaa9e911802ed0e12b7d620cd4bbf0518b3"},
+    {file = "lxml-4.6.1-cp35-cp35m-manylinux2014_aarch64.whl", hash = "sha256:4fff34721b628cce9eb4538cf9a73d02e0f3da4f35a515773cce6f5fe413b360"},
+    {file = "lxml-4.6.1-cp35-cp35m-win32.whl", hash = "sha256:475325e037fdf068e0c2140b818518cf6bc4aa72435c407a798b2db9f8e90810"},
+    {file = "lxml-4.6.1-cp35-cp35m-win_amd64.whl", hash = "sha256:f98b6f256be6cec8dd308a8563976ddaff0bdc18b730720f6f4bee927ffe926f"},
+    {file = "lxml-4.6.1-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:be7c65e34d1b50ab7093b90427cbc488260e4b3a38ef2435d65b62e9fa3d798a"},
+    {file = "lxml-4.6.1-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:d18331ea905a41ae71596502bd4c9a2998902328bbabd29e3d0f5f8569fabad1"},
+    {file = "lxml-4.6.1-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:3d9b2b72eb0dbbdb0e276403873ecfae870599c83ba22cadff2db58541e72856"},
+    {file = "lxml-4.6.1-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:d20d32cbb31d731def4b1502294ca2ee99f9249b63bc80e03e67e8f8e126dea8"},
+    {file = "lxml-4.6.1-cp36-cp36m-win32.whl", hash = "sha256:d182eada8ea0de61a45a526aa0ae4bcd222f9673424e65315c35820291ff299c"},
+    {file = "lxml-4.6.1-cp36-cp36m-win_amd64.whl", hash = "sha256:c0dac835c1a22621ffa5e5f999d57359c790c52bbd1c687fe514ae6924f65ef5"},
+    {file = "lxml-4.6.1-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:d84d741c6e35c9f3e7406cb7c4c2e08474c2a6441d59322a00dcae65aac6315d"},
+    {file = "lxml-4.6.1-cp37-cp37m-manylinux1_i686.whl", hash = "sha256:8862d1c2c020cb7a03b421a9a7b4fe046a208db30994fc8ff68c627a7915987f"},
+    {file = "lxml-4.6.1-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:3a7a380bfecc551cfd67d6e8ad9faa91289173bdf12e9cfafbd2bdec0d7b1ec1"},
+    {file = "lxml-4.6.1-cp37-cp37m-manylinux2014_aarch64.whl", hash = "sha256:2d6571c48328be4304aee031d2d5046cbc8aed5740c654575613c5a4f5a11311"},
+    {file = "lxml-4.6.1-cp37-cp37m-win32.whl", hash = "sha256:803a80d72d1f693aa448566be46ffd70882d1ad8fc689a2e22afe63035eb998a"},
+    {file = "lxml-4.6.1-cp37-cp37m-win_amd64.whl", hash = "sha256:24e811118aab6abe3ce23ff0d7d38932329c513f9cef849d3ee88b0f848f2aa9"},
+    {file = "lxml-4.6.1-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:2e311a10f3e85250910a615fe194839a04a0f6bc4e8e5bb5cac221344e3a7891"},
+    {file = "lxml-4.6.1-cp38-cp38-manylinux1_i686.whl", hash = "sha256:a71400b90b3599eb7bf241f947932e18a066907bf84617d80817998cee81e4bf"},
+    {file = "lxml-4.6.1-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:211b3bcf5da70c2d4b84d09232534ad1d78320762e2c59dedc73bf01cb1fc45b"},
+    {file = "lxml-4.6.1-cp38-cp38-manylinux2014_aarch64.whl", hash = "sha256:e65c221b2115a91035b55a593b6eb94aa1206fa3ab374f47c6dc10d364583ff9"},
+    {file = "lxml-4.6.1-cp38-cp38-win32.whl", hash = "sha256:d6f8c23f65a4bfe4300b85f1f40f6c32569822d08901db3b6454ab785d9117cc"},
+    {file = "lxml-4.6.1-cp38-cp38-win_amd64.whl", hash = "sha256:573b2f5496c7e9f4985de70b9bbb4719ffd293d5565513e04ac20e42e6e5583f"},
+    {file = "lxml-4.6.1-cp39-cp39-manylinux1_i686.whl", hash = "sha256:1d87936cb5801c557f3e981c9c193861264c01209cb3ad0964a16310ca1b3301"},
+    {file = "lxml-4.6.1-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:2d5896ddf5389560257bbe89317ca7bcb4e54a02b53a3e572e1ce4226512b51b"},
+    {file = "lxml-4.6.1-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:9b06690224258db5cd39a84e993882a6874676f5de582da57f3df3a82ead9174"},
+    {file = "lxml-4.6.1-cp39-cp39-win32.whl", hash = "sha256:bb252f802f91f59767dcc559744e91efa9df532240a502befd874b54571417bd"},
+    {file = "lxml-4.6.1-cp39-cp39-win_amd64.whl", hash = "sha256:7ecaef52fd9b9535ae5f01a1dd2651f6608e4ec9dc136fc4dfe7ebe3c3ddb230"},
+    {file = "lxml-4.6.1.tar.gz", hash = "sha256:c152b2e93b639d1f36ec5a8ca24cde4a8eefb2b6b83668fcd8e83a67badcb367"},
 ]
 markupsafe = [
     {file = "MarkupSafe-1.1.1-cp27-cp27m-macosx_10_6_intel.whl", hash = "sha256:09027a7803a62ca78792ad89403b1b7a73a01c8cb65909cd876f7fcebd79b161"},
@@ -1241,8 +1246,8 @@ mistune = [
     {file = "mistune-0.8.4.tar.gz", hash = "sha256:59a3429db53c50b5c6bcc8a07f8848cb00d7dc8bdb431a4ab41920d201d4756e"},
 ]
 nbclient = [
-    {file = "nbclient-0.5.0-py3-none-any.whl", hash = "sha256:8a6e27ff581cee50895f44c41936ce02369674e85e2ad58643d8d4a6c36771b0"},
-    {file = "nbclient-0.5.0.tar.gz", hash = "sha256:8ad52d27ba144fca1402db014857e53c5a864a2f407be66ca9d74c3a56d6591d"},
+    {file = "nbclient-0.5.1-py3-none-any.whl", hash = "sha256:4d6b116187c795c99b9dba13d46e764d596574b14c296d60670c8dfe454db364"},
+    {file = "nbclient-0.5.1.tar.gz", hash = "sha256:01e2d726d16eaf2cde6db74a87e2451453547e8832d142f73f72fddcd4fe0250"},
 ]
 nbconvert = [
     {file = "nbconvert-6.0.7-py3-none-any.whl", hash = "sha256:39e9f977920b203baea0be67eea59f7b37a761caa542abe80f5897ce3cf6311d"},
@@ -1467,8 +1472,8 @@ traitlets = [
     {file = "traitlets-5.0.5.tar.gz", hash = "sha256:178f4ce988f69189f7e523337a3e11d91c786ded9360174a3d9ca83e79bc5396"},
 ]
 urllib3 = [
-    {file = "urllib3-1.25.10-py2.py3-none-any.whl", hash = "sha256:e7983572181f5e1522d9c98453462384ee92a0be7fac5f1413a1e35c56cc0461"},
-    {file = "urllib3-1.25.10.tar.gz", hash = "sha256:91056c15fa70756691db97756772bb1eb9678fa585d9184f24534b100dc60f4a"},
+    {file = "urllib3-1.25.11-py2.py3-none-any.whl", hash = "sha256:f5321fbe4bf3fefa0efd0bfe7fb14e90909eb62a48ccda331726b4319897dd5e"},
+    {file = "urllib3-1.25.11.tar.gz", hash = "sha256:8d7eaa5a82a1cac232164990f04874c594c9453ec55eef02eab885aa02fc17a2"},
 ]
 virtualenv = [
     {file = "virtualenv-20.0.35-py2.py3-none-any.whl", hash = "sha256:0ebc633426d7468664067309842c81edab11ae97fcaf27e8ad7f5748c89b431b"},