updated for version 7.4.311
Problem:    Can't use winrestview to only restore part of the view.
Solution:   Handle missing items in the dict. (Christian Brabandt)
Added tag v7-4-311 for changeset f6f754304324
updated for version 7.4.312
Problem:    Cannot figure out what argument list is being used for a window.
Solution:   Add the arglistid() function. (Marcin Szamotulski)
Added tag v7-4-312 for changeset 66eead134d68
Merge branch 'vim'