Support Python 3.8 and update dependencies

Author: Cito

.bumpversion.cfg

@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 3.0.0a1
+current_version = 3.0.0a2
 commit = False
 tag = False
 

.travis.yml

@@ -6,6 +6,11 @@ matrix:
       python: 3.7
       dist: xenial
       sudo: true
+    - name: Unit tests with Python 3.8
+      env: TOXENV=py38
+      python: 3.8
+      dist: xenial
+      sudo: true
     - name: Unit tests with Python 3.7
       env: TOXENV=py37
       python: 3.7
@@ -19,7 +24,7 @@ cache:
     - "$HOME/.cache/pip"
     - "$TRAVIS_BUILD_DIR/.tox"
 install:
-  - pip install "poetry>=1.0.0a5"
+  - pip install "poetry>=1.0.0"
   - poetry install
 script:
   - tox -e $TOXENV -- --cov-report term-missing --cov=graphql_relay

README.md

@@ -27,7 +27,7 @@ An overview of GraphQL in general is available in the
 [README](https://github.com/graphql-python/graphql-core/blob/master/README.md) for the
 [Specification for GraphQL](https://github.com/graphql-python/graphql-core).
 
-This library is designed to work with the 
+This library is designed to work with the
 the [GraphQL-Core](https://github.com/graphql-python/graphql-core)
 Python reference implementation of a GraphQL server.
 
@@ -52,7 +52,7 @@ When building a schema for [GraphQL](https://github.com/graphql-python/graphql-c
 the provided library functions can be used to simplify the creation of Relay
 patterns.
 
-### Connections 
+### Connections
 
 Helper functions are provided for both building the GraphQL types
 for connections and for implementing the `resolver` method for fields
@@ -261,5 +261,5 @@ Python versions and perform all additional source code checks.
 You can also restrict tox to an individual environment, like this:
 
 ```sh
-petry run tox -e py37
+poetry run tox -e py37
 ```