Bumped version to 1.1.0

[FinalAngel]

• Added support for Django 2.2 and django CMS 3.7
• Added support for Transifex
• Added isort and flake8
• Changed from djangocms-helper to django-app-helper
• Extended test matrix
• Adapted code base to align with other supported addons
• Removed INDEX_TITLE backwards compatibility shim

[codecov-io]

Codecov Report

Merging #104 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #104   +/-   ##
=======================================
  Coverage   57.45%   57.45%           
=======================================
  Files          14       14           
  Lines         463      463           
  Branches       49       49           
=======================================
  Hits          266      266           
  Misses        174      174           
  Partials       23       23

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