Add plugin and indent settings for ANTLR
Make .jisp files be highlighted as lisp
Make NERDTree easier to use using settings and an autocommand

and documenting my current problems and status in comments
Make just <Space> a no-op

so it doesn’t conflict with <Leader> duties, if I start a <Leader> command and then back out of it

also corrected a comment that got stale after I modified the mapping it refers to
Add mapping to open BufExplorer easily
Remove autocommand to open NERDTree on new window open

I hadn’t realized that it would affect even MacVim’s “New Window” command. I’ll have to find another way to make browsing opened directories with NERDTree easy.
Add four plugins related to Clojure