Add requirements.in to the dev requirements

Author: akb

dev-requirements.in

@@ -1,3 +1,4 @@
+-r requirements.in
 bump2version
 coverage
 hypothesis

dev-requirements.txt

@@ -7,13 +7,17 @@
 aiohttp==3.5.4
 alabaster==0.7.12         # via sphinx
 ansicolors==1.0.2         # via cuvner
-appdirs==1.4.3            # via black
+anyio==1.0.0              # via asks
+appdirs==1.4.3
 argh==0.26.2              # via watchdog
+asks==2.3.3
 asn1crypto==0.24.0        # via cryptography
 astroid==2.2.5            # via pylint
+async-exit-stack==1.0.1
+async-generator==1.10
 async-timeout==3.0.1      # via aiohttp
 atomicwrites==1.3.0       # via pytest
-attrs==19.1.0             # via aiohttp, automat, black, hypothesis, pytest, service-identity, treq, twisted
+attrs==19.1.0
 automat==0.7.0            # via twisted
 babel==2.6.0              # via sphinx
 black==19.3b0
@@ -22,17 +26,18 @@ bump2version==0.5.10
 certifi==2019.3.9         # via requests
 cffi==1.12.2              # via cryptography
 chardet==3.0.4            # via aiohttp, requests
-click==7.0                # via black, cuvner
+click==7.0
 constantly==15.1.0        # via twisted
 coverage==4.5.3
 cryptography==2.6.1       # via pyopenssl, service-identity
 cuvner==18.0.1
 docshtest==0.0.2
 docutils==0.14            # via readme-renderer, sphinx
 filelock==3.0.10          # via tox
+h11==0.9.0                # via asks
 hyperlink==19.0.0         # via twisted
 hypothesis==4.17.1
-idna==2.8                 # via hyperlink, requests, twisted, yarl
+idna==2.8                 # via hyperlink, requests, trio, twisted, yarl
 imagesize==1.1.0          # via sphinx
 incremental==17.5.0       # via cuvner, treq, twisted
 isort==4.3.17             # via pylint
@@ -42,9 +47,11 @@ lazy-object-proxy==1.3.1  # via astroid
 lockfile==0.12.2
 lxml==4.3.4
 markupsafe==1.1.1         # via jinja2
+marshmallow==3.0.0rc7
 mccabe==0.6.1             # via pylint
 more-itertools==7.0.0     # via pytest
 multidict==4.5.2          # via aiohttp, yarl
+outcome==1.0.0            # via trio
 packaging==19.0           # via pytest-sugar, sphinx
 parso==0.4.0
 pathtools==0.1.2          # via watchdog
@@ -59,6 +66,7 @@ pyhamcrest==1.9.0         # via twisted
 pylint==2.3.1
 pyopenssl==19.0.0         # via twisted
 pyparsing==2.4.0          # via packaging
+pyrsistent==0.15.2
 pytest-clarity==0.1.0a1
 pytest-cov==2.6.1
 pytest-sugar==0.9.2
@@ -69,8 +77,10 @@ readme-renderer==24.0     # via twine
 requests-toolbelt==0.8.0  # via twine
 requests==2.21.0
 service-identity==18.1.0  # via twisted
-six==1.12.0               # via astroid, automat, bleach, cryptography, cuvner, packaging, pyhamcrest, pyopenssl, pytest, readme-renderer, tox, treq
+six==1.12.0               # via astroid, automat, bleach, cryptography, cuvner, packaging, pyhamcrest, pyopenssl, pyrsistent, pytest, readme-renderer, tox, treq
+sniffio==1.1.0            # via anyio, trio
 snowballstemmer==1.2.1    # via sphinx
+sortedcontainers==2.1.0   # via trio
 sphinx-rtd-theme==0.4.3
 sphinx==2.0.1
 sphinxcontrib-applehelp==1.0.1  # via sphinx
@@ -80,10 +90,12 @@ sphinxcontrib-jsmath==1.0.1  # via sphinx
 sphinxcontrib-qthelp==1.0.2  # via sphinx
 sphinxcontrib-serializinghtml==1.1.3  # via sphinx
 termcolor==1.1.0          # via pytest-clarity, pytest-sugar
-toml==0.10.0              # via black, tox
+toml==0.10.0
+toolz==0.9.0
 tox==3.9.0
 tqdm==4.31.1              # via twine
 treq==18.6.0
+trio==0.11.0
 twine==1.13.0
 twisted[tls]==19.2.0
 typed-ast==1.3.1          # via astroid