Write 3.0 changelog

[eAlasdair]

something like:

• Rewrote whole system
  • List of neat features of new system
• Any content changes, like new chapters and interactives.

details to come...

[eAlasdair]

3.0.0

• Release date: TBC
• Downloads: Source downloads are available on GitHub

Changelog:

• Rebuild the Field Guide to use a django system (see the github milestone here):
  • Modernise navigation features.
  • Introduce search functionality for English chapters.
  • Improve glossary features.
• Improve chapters and chapter content:
  • Chapters are now split up into sections.
  • General content, grammar and spelling fixes.
  • Introduce new chapter sections:
  • User experience by Hayley van Waas for the Human Computer Interaction chapter.
  • General purpose compression by Hayley van Waas for the Coding - Compression chapter.
• Improve interactives:
  • Introduce interactive thumbnail generator.
  • Introduce many 'uninteractives' – allowing image text to be translated.
  • Update and modernise (in some cases rewrite from scratch) existing interactives.
  • Rename 2D Arrow Manipulations to 2D Shape Manipulations.
  • Introduce new interactives:
  • Algorithm Timer
  • Braille Alphabet
  • City Trip
  • Dictionary Compression
  • Dot combinations
  • LZSS compression
  • LZW Compression
  • Pixel Grid
  • Remove now-obsolete interactives:
  • MD5-hash
  • ncea-guide-selector
  • ziv-lempel-coding
• Redesign homepage.
• Update documentation and contributing guides.
• Update contributors page.
• Improve licencing structure to make it easier to find and navigate on GitHub.
• Introduce initial German and Spanish translations (WIP).