Cherry pick Pull Requests / PRs from https://github.com/todotxt/todo.txt/pulls

[clach04]

Potentially blocked by issue Review/compare https://github.com/todotxt/todo.txt spec

https://github.com/todotxt/todo.txt/pulls

• flip colors when the user prefers a dark color scheme todotxt/todo.txt#87 - flip colors when the user prefers a dark color scheme
  • https://github.com/too-much-todotxt/legacy_todo.txt/tree/todo.txt_PR87_make-image-theme-sensitive
  • flip colors when the user prefers a dark color scheme #18
• Add formal grammar definition of format todotxt/todo.txt#83 - Add formal grammar definition of format
  • https://github.com/too-much-todotxt/legacy_todo.txt/tree/todo.txt_PR83_EBNF_formal_gramar
• Issue #73 - Project and Context case sensitive todotxt/todo.txt#74 for Project and Context case sensitive
  • https://github.com/too-much-todotxt/legacy_todo.txt/tree/todo.txt_issue73
  • Project and Context case sensitive #17
• description of todo.txt format in plain text todotxt/todo.txt#68 - retain SVG (... or PNG... potentially useful on small screens, for example phones)
  • https://github.com/too-much-todotxt/legacy_todo.txt/tree/todo.txt_PR68_textdesc
  • description of todo.txt format in plain text #20
• Clarify wording on dates todotxt/todo.txt#21 - with the full history in this repo, this will be easier to explain

Where possible make-use of co-authors https://docs.github.com/en/pull-requests/committing-changes-to-your-project/creating-and-editing-commits/creating-a-commit-with-multiple-authors

[clach04]

https://github.com/too-much-todotxt/legacy_todo.txt/branches created to aid in this.

DONE new branch in https://github.com/too-much-todotxt/legacy_todo.txt/ with new-lines in paragraphs for ease of reading AND 7-bit clean us-ascii - see https://github.com/too-much-todotxt/legacy_todo.txt/tree/newlines_in_paragraphs