diff --git a/poetry.lock b/poetry.lock
index 4f5dafa..9fa86ac 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -12,7 +12,7 @@ description = "A database migration tool for SQLAlchemy."
 name = "alembic"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "1.4.2"
+version = "1.4.3"
 
 [package.dependencies]
 Mako = "*"
@@ -43,7 +43,7 @@ description = "Bash tab completion for argparse"
 name = "argcomplete"
 optional = false
 python-versions = "*"
-version = "1.12.0"
+version = "1.12.1"
 
 [package.extras]
 test = ["coverage", "flake8", "pexpect", "wheel"]
@@ -97,6 +97,14 @@ lazy-object-proxy = ">=1.4.0,<1.5.0"
 six = ">=1.12,<2.0"
 wrapt = ">=1.11,<2.0"
 
+[[package]]
+category = "main"
+description = "Async generators and context managers for Python 3.5+"
+name = "async-generator"
+optional = true
+python-versions = ">=3.5"
+version = "1.10"
+
 [[package]]
 category = "dev"
 description = "Atomic file writes."
@@ -112,13 +120,13 @@ description = "Classes Without Boilerplate"
 name = "attrs"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "19.3.0"
+version = "20.2.0"
 
 [package.extras]
-azure-pipelines = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "pytest-azurepipelines"]
-dev = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "sphinx", "pre-commit"]
-docs = ["sphinx", "zope.interface"]
-tests = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
+dev = ["coverage (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "sphinx", "sphinx-rtd-theme", "pre-commit"]
+docs = ["sphinx", "sphinx-rtd-theme", "zope.interface"]
+tests = ["coverage (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
+tests_no_zope = ["coverage (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six"]
 
 [[package]]
 category = "dev"
@@ -126,7 +134,7 @@ description = "Removes unused imports and unused variables"
 name = "autoflake"
 optional = false
 python-versions = "*"
-version = "1.3.1"
+version = "1.4"
 
 [package.dependencies]
 pyflakes = ">=1.1.0"
@@ -191,7 +199,7 @@ description = "An easy safelist-based HTML-sanitizing tool."
 name = "bleach"
 optional = true
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "3.1.5"
+version = "3.2.1"
 
 [package.dependencies]
 packaging = "*"
@@ -212,7 +220,7 @@ description = "Foreign Function Interface for Python calling C code."
 name = "cffi"
 optional = true
 python-versions = "*"
-version = "1.14.1"
+version = "1.14.3"
 
 [package.dependencies]
 pycparser = "*"
@@ -267,7 +275,7 @@ description = "Code coverage measurement for Python"
 name = "coverage"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
-version = "5.2.1"
+version = "5.3"
 
 [package.extras]
 toml = ["toml"]
@@ -278,7 +286,7 @@ description = "A utility for ensuring Google-style docstrings stay up to date wi
 name = "darglint"
 optional = false
 python-versions = ">=3.5,<4.0"
-version = "1.5.2"
+version = "1.5.4"
 
 [[package]]
 category = "main"
@@ -355,7 +363,7 @@ description = "Flake8 Type Annotation Checks"
 name = "flake8-annotations"
 optional = false
 python-versions = ">=3.6.1,<4.0.0"
-version = "2.3.0"
+version = "2.4.1"
 
 [package.dependencies]
 flake8 = ">=3.7,<3.9"
@@ -525,7 +533,7 @@ description = "A flake8 plugin checking common style issues or inconsistencies w
 name = "flake8-pytest-style"
 optional = false
 python-versions = ">=3.6,<4.0"
-version = "1.2.3"
+version = "1.3.0"
 
 [package.dependencies]
 flake8-plugin-utils = ">=1.3.1,<2.0.0"
@@ -581,7 +589,7 @@ description = "Python Git Library"
 name = "gitpython"
 optional = false
 python-versions = ">=3.4"
-version = "3.1.7"
+version = "3.1.8"
 
 [package.dependencies]
 gitdb = ">=4.0.1,<5"
@@ -592,7 +600,7 @@ description = "File identification library for Python"
 name = "identify"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
-version = "1.4.25"
+version = "1.5.5"
 
 [package.extras]
 license = ["editdistance"]
@@ -645,7 +653,7 @@ description = "IPython: Productive Interactive Computing"
 name = "ipython"
 optional = true
 python-versions = ">=3.7"
-version = "7.17.0"
+version = "7.18.1"
 
 [package.dependencies]
 appnope = "*"
@@ -653,7 +661,7 @@ backcall = "*"
 colorama = "*"
 decorator = "*"
 jedi = ">=0.10"
-pexpect = "*"
+pexpect = ">4.3"
 pickleshare = "*"
 prompt-toolkit = ">=2.0.0,<3.0.0 || >3.0.0,<3.0.1 || >3.0.1,<3.1.0"
 pygments = "*"
@@ -757,7 +765,7 @@ description = "Jupyter protocol implementation and client libraries"
 name = "jupyter-client"
 optional = true
 python-versions = ">=3.5"
-version = "6.1.6"
+version = "6.1.7"
 
 [package.dependencies]
 jupyter-core = ">=4.6.0"
@@ -767,7 +775,7 @@ tornado = ">=4.1"
 traitlets = "*"
 
 [package.extras]
-test = ["async-generator", "ipykernel", "ipython", "mock", "pytest", "pytest-asyncio", "pytest-timeout"]
+test = ["ipykernel", "ipython", "mock", "pytest", "pytest-asyncio", "async-generator", "pytest-timeout"]
 
 [[package]]
 category = "main"
@@ -787,7 +795,7 @@ description = "The JupyterLab notebook server extension."
 name = "jupyterlab"
 optional = true
 python-versions = ">=3.5"
-version = "2.2.4"
+version = "2.2.8"
 
 [package.dependencies]
 jinja2 = ">=2.10"
@@ -799,6 +807,17 @@ tornado = "<6.0.0 || >6.0.0,<6.0.1 || >6.0.1,<6.0.2 || >6.0.2"
 docs = ["jsx-lexer", "recommonmark", "sphinx", "sphinx-rtd-theme", "sphinx-copybutton"]
 test = ["pytest", "pytest-check-links", "requests", "wheel", "virtualenv"]
 
+[[package]]
+category = "main"
+description = "Pygments theme using JupyterLab CSS variables"
+name = "jupyterlab-pygments"
+optional = true
+python-versions = "*"
+version = "0.1.2"
+
+[package.dependencies]
+pygments = ">=2.4.1,<3"
+
 [[package]]
 category = "main"
 description = "JupyterLab Server"
@@ -864,14 +883,6 @@ optional = true
 python-versions = "*"
 version = "0.8.4"
 
-[[package]]
-category = "dev"
-description = "More routines for operating on iterables, beyond itertools"
-name = "more-itertools"
-optional = false
-python-versions = ">=3.5"
-version = "8.4.0"
-
 [[package]]
 category = "dev"
 description = "Optional static typing for Python"
@@ -907,13 +918,33 @@ version = "1.0.7"
 [package.dependencies]
 ipython = "*"
 
+[[package]]
+category = "main"
+description = "A client library for executing notebooks. Formally nbconvert's ExecutePreprocessor."
+name = "nbclient"
+optional = true
+python-versions = ">=3.6"
+version = "0.5.0"
+
+[package.dependencies]
+async-generator = "*"
+jupyter-client = ">=6.1.5"
+nbformat = ">=5.0"
+nest-asyncio = "*"
+traitlets = ">=4.2"
+
+[package.extras]
+dev = ["codecov", "coverage", "ipython", "ipykernel", "ipywidgets", "pytest (>=4.1)", "pytest-cov (>=2.6.1)", "check-manifest", "flake8", "mypy", "tox", "bumpversion", "xmltodict", "pip (>=18.1)", "wheel (>=0.31.0)", "setuptools (>=38.6.0)", "twine (>=1.11.0)", "black"]
+sphinx = ["Sphinx (>=1.7)", "sphinx-book-theme", "mock", "moto", "myst-parser"]
+test = ["codecov", "coverage", "ipython", "ipykernel", "ipywidgets", "pytest (>=4.1)", "pytest-cov (>=2.6.1)", "check-manifest", "flake8", "mypy", "tox", "bumpversion", "xmltodict", "pip (>=18.1)", "wheel (>=0.31.0)", "setuptools (>=38.6.0)", "twine (>=1.11.0)", "black"]
+
 [[package]]
 category = "main"
 description = "Converting Jupyter Notebooks"
 name = "nbconvert"
 optional = true
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "5.6.1"
+python-versions = ">=3.6"
+version = "6.0.6"
 
 [package.dependencies]
 bleach = "*"
@@ -921,19 +952,21 @@ defusedxml = "*"
 entrypoints = ">=0.2.2"
 jinja2 = ">=2.4"
 jupyter-core = "*"
+jupyterlab-pygments = "*"
 mistune = ">=0.8.1,<2"
+nbclient = ">=0.5.0,<0.6.0"
 nbformat = ">=4.4"
 pandocfilters = ">=1.4.1"
-pygments = "*"
+pygments = ">=2.4.1"
 testpath = "*"
 traitlets = ">=4.2"
 
 [package.extras]
-all = ["pytest", "pytest-cov", "ipykernel", "jupyter-client (>=5.3.1)", "ipywidgets (>=7)", "pebble", "tornado (>=4.0)", "sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "sphinxcontrib-github-alt", "ipython", "mock"]
-docs = ["sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "sphinxcontrib-github-alt", "ipython", "jupyter-client (>=5.3.1)"]
-execute = ["jupyter-client (>=5.3.1)"]
+all = ["pytest", "pytest-cov", "pytest-dependency", "ipykernel", "ipywidgets (>=7)", "pyppeteer (0.2.2)", "tornado (>=4.0)", "sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "ipython"]
+docs = ["sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "ipython"]
 serve = ["tornado (>=4.0)"]
-test = ["pytest", "pytest-cov", "ipykernel", "jupyter-client (>=5.3.1)", "ipywidgets (>=7)", "pebble", "mock"]
+test = ["pytest", "pytest-cov", "pytest-dependency", "ipykernel", "ipywidgets (>=7)", "pyppeteer (0.2.2)"]
+webpdf = ["pyppeteer (0.2.2)"]
 
 [[package]]
 category = "main"
@@ -952,13 +985,21 @@ traitlets = ">=4.1"
 [package.extras]
 test = ["pytest", "pytest-cov", "testpath"]
 
+[[package]]
+category = "main"
+description = "Patch asyncio to allow nested event loops"
+name = "nest-asyncio"
+optional = true
+python-versions = ">=3.5"
+version = "1.4.1"
+
 [[package]]
 category = "dev"
 description = "Node.js virtual environment builder"
 name = "nodeenv"
 optional = false
 python-versions = "*"
-version = "1.4.0"
+version = "1.5.0"
 
 [[package]]
 category = "main"
@@ -966,7 +1007,7 @@ description = "A web-based notebook environment for interactive computing"
 name = "notebook"
 optional = true
 python-versions = ">=3.5"
-version = "6.1.1"
+version = "6.1.4"
 
 [package.dependencies]
 Send2Trash = "*"
@@ -994,7 +1035,7 @@ description = "Flexible test automation."
 name = "nox"
 optional = false
 python-versions = ">=3.5"
-version = "2020.5.24"
+version = "2020.8.22"
 
 [package.dependencies]
 argcomplete = ">=1.9.4,<2.0"
@@ -1011,7 +1052,7 @@ description = "NumPy is the fundamental package for array computing with Python.
 name = "numpy"
 optional = true
 python-versions = ">=3.6"
-version = "1.19.1"
+version = "1.19.2"
 
 [[package]]
 category = "main"
@@ -1031,7 +1072,7 @@ description = "Powerful data structures for data analysis, time series, and stat
 name = "pandas"
 optional = true
 python-versions = ">=3.6.1"
-version = "1.1.0"
+version = "1.1.2"
 
 [package.dependencies]
 numpy = ">=1.15.4"
@@ -1073,8 +1114,8 @@ category = "dev"
 description = "Python Build Reasonableness"
 name = "pbr"
 optional = false
-python-versions = "*"
-version = "5.4.5"
+python-versions = ">=2.6"
+version = "5.5.0"
 
 [[package]]
 category = "dev"
@@ -1124,7 +1165,7 @@ description = "A framework for managing and maintaining multi-language pre-commi
 name = "pre-commit"
 optional = false
 python-versions = ">=3.6.1"
-version = "2.6.0"
+version = "2.7.1"
 
 [package.dependencies]
 cfgv = ">=2.0.0"
@@ -1151,7 +1192,7 @@ description = "Library for building powerful interactive command lines in Python
 name = "prompt-toolkit"
 optional = true
 python-versions = ">=3.6.1"
-version = "3.0.6"
+version = "3.0.7"
 
 [package.dependencies]
 wcwidth = "*"
@@ -1162,7 +1203,7 @@ description = "psycopg2 - Python-PostgreSQL Database Adapter"
 name = "psycopg2"
 optional = false
 python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*"
-version = "2.8.5"
+version = "2.8.6"
 
 [[package]]
 category = "main"
@@ -1203,7 +1244,7 @@ description = "Python docstring style checker"
 name = "pydocstyle"
 optional = false
 python-versions = ">=3.5"
-version = "5.0.2"
+version = "5.1.1"
 
 [package.dependencies]
 snowballstemmer = "*"
@@ -1222,7 +1263,7 @@ description = "Pygments is a syntax highlighting package written in Python."
 name = "pygments"
 optional = false
 python-versions = ">=3.5"
-version = "2.6.1"
+version = "2.7.1"
 
 [[package]]
 category = "dev"
@@ -1230,12 +1271,12 @@ description = "python code static checker"
 name = "pylint"
 optional = false
 python-versions = ">=3.5.*"
-version = "2.5.3"
+version = "2.6.0"
 
 [package.dependencies]
 astroid = ">=2.4.0,<=2.5"
 colorama = "*"
-isort = ">=4.2.5,<5"
+isort = ">=4.2.5,<6"
 mccabe = ">=0.6,<0.7"
 toml = ">=0.7.1"
 
@@ -1252,11 +1293,8 @@ category = "main"
 description = "Persistent/Functional/Immutable data structures"
 name = "pyrsistent"
 optional = true
-python-versions = "*"
-version = "0.16.0"
-
-[package.dependencies]
-six = "*"
+python-versions = ">=3.5"
+version = "0.17.3"
 
 [[package]]
 category = "dev"
@@ -1264,14 +1302,13 @@ description = "pytest: simple powerful testing with Python"
 name = "pytest"
 optional = false
 python-versions = ">=3.5"
-version = "6.0.1"
+version = "6.1.0"
 
 [package.dependencies]
 atomicwrites = ">=1.0"
 attrs = ">=17.4.0"
 colorama = "*"
 iniconfig = "*"
-more-itertools = ">=4.0.0"
 packaging = "*"
 pluggy = ">=0.12,<1.0"
 py = ">=1.8.2"
@@ -1287,7 +1324,7 @@ description = "Pytest plugin for measuring coverage."
 name = "pytest-cov"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "2.10.0"
+version = "2.10.1"
 
 [package.dependencies]
 coverage = ">=4.4"
@@ -1385,7 +1422,7 @@ description = "Alternative regular expression module, to replace re."
 name = "regex"
 optional = false
 python-versions = "*"
-version = "2020.7.14"
+version = "2020.9.27"
 
 [[package]]
 category = "main"
@@ -1454,7 +1491,7 @@ description = "Python documentation generator"
 name = "sphinx"
 optional = false
 python-versions = ">=3.5"
-version = "3.2.0"
+version = "3.2.1"
 
 [package.dependencies]
 Jinja2 = ">=2.3"
@@ -1572,7 +1609,7 @@ description = "Database Abstraction Library"
 name = "sqlalchemy"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "1.3.18"
+version = "1.3.19"
 
 [package.extras]
 mssql = ["pyodbc"]
@@ -1592,18 +1629,18 @@ description = "Manage dynamic plugins for Python applications"
 name = "stevedore"
 optional = false
 python-versions = ">=3.6"
-version = "3.2.0"
+version = "3.2.2"
 
 [package.dependencies]
 pbr = ">=2.0.0,<2.1.0 || >2.1.0"
 
 [[package]]
 category = "main"
-description = "Terminals served to xterm.js using Tornado websockets"
+description = "Tornado websocket backend for the Xterm.js Javascript terminal emulator library."
 name = "terminado"
 optional = true
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "0.8.3"
+python-versions = ">=3.6"
+version = "0.9.1"
 
 [package.dependencies]
 ptyprocess = "*"
@@ -1616,7 +1653,7 @@ description = "A collection of helpers and mock objects for unit tests and doc t
 name = "testfixtures"
 optional = false
 python-versions = "*"
-version = "6.14.1"
+version = "6.14.2"
 
 [package.extras]
 build = ["setuptools-git", "wheel", "twine"]
@@ -1652,19 +1689,17 @@ version = "6.0.4"
 
 [[package]]
 category = "main"
-description = "Traitlets Python config system"
+description = "Traitlets Python configuration system"
 name = "traitlets"
 optional = true
-python-versions = "*"
-version = "4.3.3"
+python-versions = ">=3.7"
+version = "5.0.4"
 
 [package.dependencies]
-decorator = "*"
 ipython-genutils = "*"
-six = "*"
 
 [package.extras]
-test = ["pytest", "mock"]
+test = ["pytest"]
 
 [[package]]
 category = "dev"
@@ -1680,7 +1715,7 @@ description = "Backported and Experimental Type Hints for Python 3.5+"
 name = "typing-extensions"
 optional = false
 python-versions = "*"
-version = "3.7.4.2"
+version = "3.7.4.3"
 
 [[package]]
 category = "main"
@@ -1701,7 +1736,7 @@ description = "Virtual Python Environment builder"
 name = "virtualenv"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
-version = "20.0.30"
+version = "20.0.31"
 
 [package.dependencies]
 appdirs = ">=1.4.3,<2"
@@ -1804,7 +1839,8 @@ alabaster = [
     {file = "alabaster-0.7.12.tar.gz", hash = "sha256:a661d72d58e6ea8a57f7a86e37d86716863ee5e92788398526d58b26a4e4dc02"},
 ]
 alembic = [
-    {file = "alembic-1.4.2.tar.gz", hash = "sha256:035ab00497217628bf5d0be82d664d8713ab13d37b630084da8e1f98facf4dbf"},
+    {file = "alembic-1.4.3-py2.py3-none-any.whl", hash = "sha256:4e02ed2aa796bd179965041afa092c55b51fb077de19d61835673cc80672c01c"},
+    {file = "alembic-1.4.3.tar.gz", hash = "sha256:5334f32314fb2a56d86b4c4dd1ae34b08c03cae4cb888bc699942104d66bc245"},
 ]
 appdirs = [
     {file = "appdirs-1.4.4-py2.py3-none-any.whl", hash = "sha256:a841dacd6b99318a741b166adb07e19ee71a274450e68237b4650ca1055ab128"},
@@ -1815,8 +1851,8 @@ appnope = [
     {file = "appnope-0.1.0.tar.gz", hash = "sha256:8b995ffe925347a2138d7ac0fe77155e4311a0ea6d6da4f5128fe4b3cbe5ed71"},
 ]
 argcomplete = [
-    {file = "argcomplete-1.12.0-py2.py3-none-any.whl", hash = "sha256:91dc7f9c7f6281d5a0dce5e73d2e33283aaef083495c13974a7dd197a1cdc949"},
-    {file = "argcomplete-1.12.0.tar.gz", hash = "sha256:2fbe5ed09fd2c1d727d4199feca96569a5b50d44c71b16da9c742201f7cc295c"},
+    {file = "argcomplete-1.12.1-py2.py3-none-any.whl", hash = "sha256:5cd1ac4fc49c29d6016fc2cc4b19a3c08c3624544503495bf25989834c443898"},
+    {file = "argcomplete-1.12.1.tar.gz", hash = "sha256:849c2444c35bb2175aea74100ca5f644c29bf716429399c0f2203bb5d9a8e4e6"},
 ]
 argon2-cffi = [
     {file = "argon2-cffi-20.1.0.tar.gz", hash = "sha256:d8029b2d3e4b4cea770e9e5a0104dd8fa185c1724a0f01528ae4826a6d25f97d"},
@@ -1848,16 +1884,20 @@ astroid = [
     {file = "astroid-2.4.2-py3-none-any.whl", hash = "sha256:bc58d83eb610252fd8de6363e39d4f1d0619c894b0ed24603b881c02e64c7386"},
     {file = "astroid-2.4.2.tar.gz", hash = "sha256:2f4078c2a41bf377eea06d71c9d2ba4eb8f6b1af2135bec27bbbb7d8f12bb703"},
 ]
+async-generator = [
+    {file = "async_generator-1.10-py3-none-any.whl", hash = "sha256:01c7bf666359b4967d2cda0000cc2e4af16a0ae098cbffcb8472fb9e8ad6585b"},
+    {file = "async_generator-1.10.tar.gz", hash = "sha256:6ebb3d106c12920aaae42ccb6f787ef5eefdcdd166ea3d628fa8476abe712144"},
+]
 atomicwrites = [
     {file = "atomicwrites-1.4.0-py2.py3-none-any.whl", hash = "sha256:6d1784dea7c0c8d4a5172b6c620f40b6e4cbfdf96d783691f2e1302a7b88e197"},
     {file = "atomicwrites-1.4.0.tar.gz", hash = "sha256:ae70396ad1a434f9c7046fd2dd196fc04b12f9e91ffb859164193be8b6168a7a"},
 ]
 attrs = [
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