updated for version 7.4b.019
Problem:    Tabline is not updated properly when closing a tab on Win32.
Solution:   Only reduce flickering when adding a tab. (Ken Takata)
Added tag v7-4b-019 for changeset 74a211a0d3a3
updated for version 7.4b.020
Problem:    "g~ap" changes first character of next paragraph. (Manuel Ortega)
Solution:   Avoid subtracting (0 - 1) from todo.  (Mike Williams)
Added tag v7-4b-020 for changeset 46cf49cc9289
updated for version 7.4b.021
Problem:    Pressing "u" after an external command results in multiple
	    press-enter messages. (glts)
Solution:   Don't call hit_return_msg() when we have K_IGNORE. (Christian
	    Brabandt)
Added tag v7-4b-021 for changeset 059c8a4b103f
updated for version 7.4b.022
Problem:    Not waiting for a character when the tick count overflows.
Solution:   Subtract the unsigned numbers and cast to int. (Ken Takata)
Added tag v7-4b-022 for changeset d5d6b78cff09
release version 7.4
Added tag v7-4 for changeset 359743c1f59a
updated for version 7.4.001
Problem:    Character classes such as [a-z] to not react to 'ignorecase'.
	    Breaks man page highlighting. (Mario Grgic)
Solution:   Add separate items for classes that react to 'ignorecase'.  Clean
	    up logic handling character classes.  Add more tests.
Added tag v7-4-001 for changeset 3e9107b86b68
updated for version 7.4.002
Problem:    Pattern with two alternative look-behind matches does not match.
	    (Amadeus Demarzi)
Solution:   When comparing PIMs also compare their state ID to see if they are
	    different.
Added tag v7-4-002 for changeset e29f11399cce
updated for version 7.4.003
Problem:    Memory access error in Ruby syntax highlighting. (Christopher Chow)
Solution:   Refresh stale pointer. (James McCoy)
Added tag v7-4-003 for changeset 560a6a232950
updated for version 7.4.004
Problem:    When closing a window fails ":bwipe" may hang.
Solution:   Let win_close() return FAIL and break out of the loop.
Added tag v7-4-004 for changeset f6247eaf4e1d
updated for version 7.4.005
Problem:    Using "vaB" while 'virtualedit' is set selects the wrong area.
	    (Dimitar Dimitrov)
Solution:   Reset coladd when finding a match.
Added tag v7-4-005 for changeset 3640cf4c0d4b