Previously when you delete or moved a file via
md or mm commands the NERDTree was asking you about what to do
with the remaining buffer of the just deleted or moved file. I
always press 'y' in this cases so I've decided to add a new parameter,
NERDTreeAutoDeleteBuffer which you can set to 1 in order to skip
this confirmation.

TreeDirNode.openAlong for Issues #179.

This allows users to specify whether each regex in NERDTreeIgnore should
apply to only files or only dirs.

this gives users a chance to filter out nodes using whatever logic they
please

Note that for directories, there is a trailing slash

when the user was prompted to choose a tree to mirror, it would mirror
the wrong one

this commit is a modified patch from Guillaume Duranceau

this commit is a modified patch from Guillaume Duranceau

allows the statusline to be customised for the nerd tree window