Data.List: update doc
doc: fix typo
Merge pull request #124 from crazymaster/master

doc: fix typo
Random.Xor128: fix error message
Random.Xor128: fixed srand()
Random.Xor128: add an example in help
Merge pull request #125 from vim-jp/xor128

srand() 後に rand() が同じ値を復帰しない。