patch 8.0.0304: assign test fails in the GUI

Problem:    Assign test fails in the GUI.
Solution:   Skip the test for setting t_k1.

patch 8.0.0303: bracketed paste does not work in Visual mode

Problem:    Bracketed paste does not work in Visual mode.
Solution:   Delete the text before pasting

patch 8.0.0302: cannot set terminal key codes with :let

Problem:    Cannot set terminal key codes with :let.
Solution:   Make it work.

patch 8.0.0301: not enough testing for setting options

Problem:    No tests for ":set completion" and various errors of the :set
            command.
Solution:   Add more :set tests. (Dominique Pelle, closes vim#1440)

patch 8.0.0300: cannot stop diffing hidden buffers

Problem:    Cannot stop diffing hidden buffers. (Daniel Hahler)
Solution:   When using :diffoff! make the whole list if diffed buffers empty.
            (closes vim#736)

patch 8.0.0299: a window resize is sometimes not taking effect

Problem:    When the GUI window is resized Vim does not always take over the
            new size. (Luchr)
Solution:   Reset new_p_guifont in gui_resize_shell().  Call
            gui_may_resize_shell() in the main loop.

patch 8.0.0298: Ex command range with repeated search does not work

Problem:    Ex command range with repeated search does not work. (Bruce
            DeVisser)
Solution:   Skip over \/, \? and \&.

patch 8.0.0297: double free on exit when using a closure

Problem:    Double free on exit when using a closure. (James McCoy)
Solution:   Split free_al_functions in two parts. (closes vim#1428)

patch 8.0.0296: bracketed paste can only append, not insert

Problem:    Bracketed paste can only append, not insert.
Solution:   When the cursor is in the first column insert the text.

patch 8.0.0295: test_viml hangs

Problem:    test_viml hangs.
Solution:   Put resetting 'more' before sourcing the script.