in vim mode when using multi key esc sequence can be triggered when pasting

[gpwclark]

in sl-liner it is possible to add another esc shortcut equivalent to the Esc key, e.g. 'jk'

if the remapped esc sequence occurs in a pasted series of characters in insert mode, it will trigger a transition to normal mode which causes undesirable behavior as the characters after the remapped escape sequence will be carried in normal mode.