Annotating types for function expression parameters is usually
unnecessary because the parameter types can almost always be
inferred from the context, thus making the practice redundant.
Declaring variables as final when possible is a good practice
because it helps avoid accidental reassignments and allows the
compiler to do optimizations.
* Upgrade upgradable packages
* Apply default null-safety migrations
* Remove hashnode as a dependency and localize its functionality to the package.
Maintenance was done long time ago hence no need to wait for the update
* Localize ui package to reduce maintenance burdens
* Replace universal html with dart:html
* Remove unnecessary checks
* Fix formatting
* Migrate app to null safety
* Enable methods to be nullable
* Fix non-nullable issue with node methods
* Cast as Node
* Use universal html
* Use universal html package to bring in the ImageElement class
* Remove unused imports
* Fix imports on the editor file
* Add key to quill editor
* Remove final from the GlobalKey
* Remove final on GlobalKey
* Remove custom util implementation in favor of quiver
* Fix issue with null on token attrivute
* Remove final hashcode that is replaced by quiver functionality
* Fix merge request
* Fix hit test position in text_line.dart
* Fix null safety errors on text_selection.dart
* Fix sound null safe errors in toolbar.dart
* Import null safe file picker
Xin Yao
Till Friebe
Miller Adulu