Log Message:
devel/py-python-slugify: Update to 3.0.3

## 3.0.3
  - Add Options to readme
  - Add more unit tests

## 3.0.2
  - Add official support of Py 3.7

## 3.0.1
  - Add test.py to manifest

## 3.0.0
  - Upgrade Unidecode
  - Promote text-unidecode as the primary decoding package
  - Add Unidecode as an optional extra. "pip install \ 
python-slugify[unidecode]"

## 2.0.1
  - Add replacements option e.g. [['|', 'or'], ['%', 'percent'], ['-', '_']] \ 
(@andriyor)

## 2.0.0
  - Fix alternative dependency installation