Managing implementation details...

[JS]

Is there an easy way to document future implementation details, 
bugs, and modifications to code? I'm not too familiar with ddoc 
and while it can be done I'm interested in a clean and direct way 
to do this:

doc!("remove any gc dependence", 3);
doc!("fix bug #2345", 1);
void func() {}

where doc! essentially just takes a string and a "priority" and 
allows one to view the messages and source code locations(uses 
__LINE__, etc...).

Being able to manage the priorities is key so most important 
issues can be fixed first... knowing exactly where to find the 
code to fix is also crucial.

I think when the code is compiled a "report" can be generated 
listing the priorities along with the locations in the file would 
be beneficial...

Anything like this already available?