prepare for release

[ghost]

Builds will currently fail until Modoboa 1.10.0 is tagged, this build shows the other changes don't break anything.

• refactor setup.py

  • use setuptools_scm to generate version number, normal releases will use the tagged version (ie 1.9.1), versions installed from source will append the git commit number to the version number (ie 1.9.1.dev61+g4584c93)

  • use io.open() to read text files to correctly handle utf-8 characters

  • use pip to parse requirements.txt

  • update classifiers to specify python and django versions supported

  • wheel distributions can now be built using python setup.py bdist_wheel

• fix travis setup

  • target oldest currently supported database servers, travis currently defaults to PostgreSQL 9.2 which isn't supported anymore.

  • move database dependencies out of travis.yml into test_requirements.txt and pin to minimum versions recommended by django. See https://docs.djangoproject.com/en/1.11/ref/databases/

  • remove unnecessary database setup. See modoboa/modoboa#1340

  • create binary wheels when a tag is pushed

• don't silence pip in Travis builds, it can provide useful information when you break something

• modoboa/modoboa#1353 remove the dependency on django-versionfield, use setuptools.parse_version instead

• python 2 fix, use io.open() to open log file using utf-8 encoding

[codecov[bot]]

Codecov Report

Merging #37 into master will decrease coverage by 0.18%. The diff coverage is 83.33%.

@@            Coverage Diff            @@
##           master     #37      +/-   ##
=========================================
- Coverage   90.28%   90.1%   -0.19%     
=========================================
  Files          13      13              
  Lines         762     768       +6     
=========================================
+ Hits          688     692       +4     
- Misses         74      76       +2

Impacted Files	Coverage Δ
modoboa_stats/forms.py	95% <100%> (-0.24%)	:arrow_down:
modoboa_stats/management/commands/logparser.py	82.27% <100%> (+0.05%)	:arrow_up:
modoboa_stats/__init__.py	75% <71.42%> (-25%)	:arrow_down:

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