More flexible tool API
Minor code format fixes
Clipboard freeze fixed(?)
Arrow correcly growing close to the start point
Improve maintainability
Add undo/redo stack
-use of the override keyword
-delete unused code
-const correctness
-more uniform code style
-for each with const references when possible
-getters no longer use the word 'get'
-others
A new, more flexible and restrictive parser to improve the
usage and experience of Flameshot in the command line.
This parser is based on a parent-child node model and is very easy
to define relationships between arguments and options with
informative error checking. You can define lambdas to check the
received values for every option and custom error messages
