[Feature] Word selection - selecting left/upward

[Regnareb]

Just a little idea to improve the Word Selector key.
I don't know about other people but I rarely select words to the right, I almost exclusively select to the left. I can easily customise it by modifying the code but it would be cool to have the choice by either create another key function or add it through a modifier (ctrl).

I'd personally prefer separated keys (right/left/bottom line/upward line) but it's not implemented like that actually.
Same for ctrl and shift but I can change it easily. Shift is usually used to slightly altering a current behaviour (left/right), Ctrl altering it more (word/line).