Add tox config incl. flake8 and coverage.

flake8 currently fails.

.coveragerc

@@ -0,0 +1,6 @@
+[run]
+branch = True
+source = src
+
+[report]
+precision = 2

.gitignore

@@ -1,12 +1,15 @@
-bin/
-eggs/
-develop-eggs/
-parts/
-.installed.cfg
+*.egg-info/
 *.py[co]
+.coverage
+.installed.cfg
+.tox/
 __pycache__/
+bin/
 build/
+coverage.xml
+develop-eggs/
 dist/
-*.egg-info/
-.tox/
-TEST_THIS_REST_BEFORE_REGISTERING.txt
+eggs/
+parts/
+flake8/
+htmlcov/

tox.ini

@@ -0,0 +1,42 @@
+[tox]
+envlist =
+   py27,
+   py35,
+   py36,
+   flake8,
+   coverage
+
+[testenv]
+commands =
+    {envbindir}/buildout -c {toxinidir}/buildout.cfg buildout:directory={envdir} buildout:develop={toxinidir} bootstrap
+    {envbindir}/buildout -c {toxinidir}/buildout.cfg buildout:directory={envdir} buildout:develop={toxinidir} install test
+    coverage run {envbindir}/test {posargs:-cv}
+skip_install = true
+deps =
+    setuptools==33.1.1
+    zc.buildout
+    coverage
+setenv =
+    COVERAGE_FILE=.coverage.{envname}
+
+[testenv:coverage]
+basepython = python3.6
+skip_install = true
+deps = coverage
+setenv =
+    COVERAGE_FILE=.coverage
+commands =
+    coverage erase
+    coverage combine
+    coverage html
+    coverage xml
+    coverage report --fail-under=93
+
+[testenv:flake8]
+basepython = python3.6
+deps =
+    flake8
+    flake8-html
+    flake8-debugger
+commands =
+    flake8 --format=html --htmldir={toxinidir}/flake8 --doctests src tests setup.py {posargs}