updated for version 7.4.071
Problem:    Passing limits around too often.
Solution:   Use limits from buffer.
Added tag v7-4-071 for changeset faf7e86203b5
updated for version 7.4.072
Problem:    Crash when using Insert mode completion.
Solution:   Avoid going past the end of pum_array. (idea by Fransisco Lopes)
Added tag v7-4-072 for changeset d563839a9be0