VIM auto resize focused window
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I am slowly learning vim, and its powerful capabilities.
I have a question in regards to splitting windows (mainly horizontal splits).
Is there a way to automatically resize currently selected (focused) window. Lets say focused window will always have 70% of screen.

Using <ctrl>+w (number) + / - every time is not really efficient, especially when i jump between few files constantly.

Also it would cool if that was a way to restrict it to only horizontally slitted windows.
