* locate editor executable using which crate
* add -w/--word-regexp arg
* add option to open Context Viewer at startup
* add follow symlinks option
* ability to specify custom command
* read custom editor from environment
* add less as an editor option
* add a keybindings popup
* add keybindings for changing context viewer size
* fix flushing infinitely when opening nvim with no results found
OBS-URL: https://build.opensuse.org/package/show/utilities/igrep?expand=0&rev=4