add List.clearItems method. fixes #40.
add List.clearItems method. fixes #40.

zBMNForks/blessed,chjj/blessed,anko/blessed,rosshinkley/blessed,dbkaplun/blessed,rosshinkley/blessed,eush77/blessed,zBMNForks/blessed,mcanthony/blessed,umi/blessed,yaronn/blessed,gdseller/blessed,bulkan/blessed,piranna/blessed,dbkaplun/blessed,yaronn/blessed,anko/blessed,piranna/blessed,rstr74/blessed,rstr74/blessed,umi/blessed,mcanthony/blessed,bulkan/blessed,gdseller/blessed,eush77/blessed,chjj/blessed