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。
Data.Dict: added some methods ( max_by, min_by, foldl, foldr )
Data.Dict: formatted the exception text
Data.String: fix doc
Random.Xor128: added spec for srand()
Random.Xor128: fixed indent
ProcessManager: abandon ProcessManager.new()
ProcessManager: changelog for the previous commit
ProcessManager: trivial typofix in spec
Vim.BufferManager, Vim.Buffer: move open() from Vim.BufferManager to Vim.Buffer
Vim.BufferManager, Vim.Buffer: changelog
Vim.BufferManager: trivial bugfix
Vim.BufferManager: more documented
Vim.BufferManager: refactoring in config() by sorting
Vim.BufferManager: refactoring in config() - be more declarative
Vim.BufferManager: don't allow out-of-doc usage in config()