Use build library for packaging (#969)

* Use build for building packages

* Use python3

* Remove wheel as replaced with build

Author: geographika

README.md

@@ -17,7 +17,7 @@ numerous OGC Web Service interfaces.
 
 ## Installation
 
-The easiest way to install pywis-pubsub is via the Python [pip](https://pip.pypa.io)
+The easiest way to install OWSLib is via the Python [pip](https://pip.pypa.io)
 utility:
 
 ```bash
@@ -156,7 +156,7 @@ Releasing
   git push --tags
   # update on PyPI (must be a maintainer)
   rm -fr build dist *.egg-info
-  python3 setup.py sdist bdist_wheel --universal
+  python3 -m build
   twine upload dist/*
 ```
 

requirements-dev.txt

@@ -6,6 +6,6 @@ pytest-socket
 Pillow
 tox
 twine
-wheel
 coverage
 coveralls
+build