The Evil wiki page suggests using elscreen.el to emulate Vim's tabs:
(load "elscreen" "ElScreen" t)
(define-key evil-normal-state-map (kbd "C-w t") 'elscreen-create) ;creat tab
(define-key evil-normal-state-map (kbd "C-w x") 'elscreen-kill) ;kill tab
(define-key evil-normal-state-map "gv" 'elscreen-previous) ;previous tab
(define-key evil-normal-state-map "gt" 'elscreen-next) ;next tab
Similarly you could define:
(define-key evil-insert-state-map (kbd "; <return>") 'move-end-of-line)
This emulates imap ;<cr> <end>;<cr>. If you press ; followed by Return then the cursor will jump to the end of the line and insert a semicolon. I would have liked to make it a little more generic, but I'm missing a key function.
(define-key evil-insert-state-map (kbd ";") 'insert-or-append)
(defun insert-or-append ()
"If the user enters <return>, then jump to end of line and append a semicolon,
otherwise insert user input at the position of the cursor"
(interactive)
(let ((char-read (read-char-exclusive))
(trigger ";"))
(if (eql ?\r char-read)
(progn
(end-of-line)
(insert trigger))
(insert (this-command-keys)))))