1.7.6 is a maintenance update, fixing a number of bugs and adding support for regex backreferences

• Search and replace regex groups using the $1, $2 in the replacement string to indicate groups
• Added support for def and let commands in autocomplete
• Short versions of captions are extracted and used
• Bugfixes for
  • Versions preview
  • custom command completions with an unsaved file
  • 80 character line breaking with non-ascii characters
  • Issue where custom beamer themes would not appear in the outline
  • Autocomplete with multiple arguments
  • (null) in outline during initial save
  • Pdf preview page number when navigating via arrow keys
  • \newcommand arguments without curly parentheses