Add possible spaces in Mbox header keys.
tree9f3e332d94eab00c6eef7e7b21538ef3ecc3ca3c
-rw-r--r-- 14 .gitignore
-rw-r--r-- 6973 Gruta.pm
drwxr-xr-x - Gruta
-rw-r--r-- 614 Makefile.PL
-rw-r--r-- 3310 TODO
drwxr-xr-x - bin
drwxr-xr-x - examples
drwxr-xr-x - templates