Update copyright year range

fixed blocking enter when pressed enter+modificator+non-modificator

when pressed enter as complex control with combos

fix for potential stack overflow

more size for XQueryKeymap argument

fix for right alt reset everything only if level3 is on

update README

fix for error messages

turning off caps lock and third-level modes after escape triggering b…

…y caps lock

support ctrl+enter and shift+enter and alt+enter

fixed level3 disabling by keyboard if it was turned on by xmobar click

detecting if level3 is active by active modes

enter as additional right ctrl

also triggers real enter if no combos