Release 3.4.0

[courtneycb]

Changelog:

• Allow user to choose number of cards shown in the Binary Cards interactive, plus fit cards in groups of 8 on large screens. Allow number of cards to be changed for binary cards interactive #1262 LZSS compression interactive not encoding text correctly #1271

• Fix issues in LZSS Compression algorithm, expand its functionality, and replace space characters with the open box character for clarity. LZSS compression interactive not encoding text correctly #1271 Add text output and efficiency calculation to LZSS interactive #1285

• Fix bug in JPEG Compression interactive where sometimes a checked checkbox was treated as unchecked and vice versa. Processed image pixels not updating in jpeg compression interactive #1269

• Prevent visual overflow of matrices in Matrix Simplifier interactive. Deal with overflow of matrices in matrix simplifier interactive #1138

• Replace downloadable Python programs for searching and sorting with links to updated Python programs on repl.it. Update python programs for sorting and searching sections #1279

• Dependency updates:

  • Update coverage from 5.0 to 5.1.
  • Update django-debug-toolbar from 2.1 to 2.2.
  • Update django-modeltranslation from 0.14.1 to 0.15.
  • Update django-statici18n from 1.8.3 to 1.9.0.
  • Update django-widget-tweaks from 1.4.5 to 1.4.8.
  • Update flake8 from 3.7.9 to 3.8.3.
  • Update lxml from 4.4.2 to 4.5.1.
  • Update Pillow from 7.1.1 to 7.1.2.
  • Update pydocstyle from 5.0.1 to 5.0.2.
  • Update sphinx from 2.3.0 to 3.1.1.
  • Update wheel from 0.33.6 to 0.34.2.

[eAlasdair]

If we're both happy, punch it