added option to improve existing layer
treef3d59c99af4d54c00b0957cb2c4d73e100ff0015
-rw-r--r-- 92 .cvsignore
-rw-r--r-- 779 .gitignore
-rw-r--r-- 385 .hgignore
drwxr-xr-x - manual
drwxr-xr-x - src