Which patches/mods exists for current versions of the DMD parser?

[via Digitalmars-d]

I've started to make some minor mods to the DMD parser to tailor 
it to my own taste, but there is no reason to do double work, 
even if experimental. So I wonder which patches are available or 
in the works by others?

I'm currently working on the following mods (not thoroughly 
tested yet):

in : templatename‹params›
out: templatename!(params)

in : templatename«params»
out: templatename!"params"

in : a := expr
out: auto a = expr

in : a :== expr
out: immutable a = expr

And plan to continue with:

in :  √x+y
out:  sqrt(x) + y

in :  a•b
out:  a.opInner(b) // dot product, maybe some other name?

in :  #arr;
out:  arr.length //or perhaps something more generic?

What are you working on and what patches do you have?

What kind of syntactical sugar do you feel is missing in D?