patch 8.0.0826: cannot use text objects in Terminal mode

Problem:    Cannot use text objects in Terminal mode.
Solution:   Check for pending operator and Visual mode first. (Yasuhiro
            Matsumoto, closes vim#1906)

patch 8.0.0825: not easy to see that a window is a terminal window

Problem:    Not easy to see that a window is a terminal window.
Solution:   Add StatusLineTerm highlighting.

patch 8.0.0824: in Terminal mode the cursor and screen gets redrawn

Problem:    In Terminal mode the cursor and screen gets redrawn when the job
            produces output.
Solution:   Check for tl_terminal_mode. (partly by Yasuhiro Matsumoto, closes
            vim#1904)

patch 8.0.0823: cannot paste text into a terminal window

Problem:    Cannot paste text into a terminal window.
Solution:   Make CTRL-W " work.

patch 8.0.0822: Test_with_partial_callback is a tiny bit flaky

Problem:    Test_with_partial_callback is a tiny bit flaky.
Solution:   Add it to the list of flaky tests.

patch 8.0.0821: cannot get the title and status of a terminal window

Problem:    Cannot get the title and status of a terminal window.
Solution:   Implement term_gettitle() and term_getstatus().

patch 8.0.0820: GUI: cursor in terminal window lags behind

Problem:    GUI: cursor in terminal window lags behind.
Solution:   call gui_update_cursor() under different conditions. (Ozaki
            Kiichi, closes vim#1893)

patch 8.0.0819: cursor not positioned in terminal window

Problem:    After changing current window the cursor position in the terminal
            window is not updated.
Solution:   Set w_wrow, w_wcol and w_valid.

patch 8.0.0818: cannot get the cursor position of a terminal

Problem:    Cannot get the cursor position of a terminal.
Solution:   Add term_getcursor().

patch 8.0.0817: cannot get the terminal line at the cursor

Problem:    Cannot get the line of a terminal window at the cursor.
Solution:   Make the row argunt optionsl. (Yasuhiro Matsumoto, closes vim#1898)