It works for both get and post

$ lwp-request -m get http://localhost:3000/test/wee/csv
wee,get,this
$ lwp-request -m post http://localhost:3000/test/wee/csv
Please enter content (application/x-www-form-urlencoded) to be POSTed:
done
^Z
wee,post,this
$ mversion Dancer
1.3135
[download]

thats from 2015-04-22

It also works on 1.3202 2015-11-07