#53 Only store command in history buffer when changed

已合并

shimatta 于 4 年之前将 6 次代码提交从 shimatta/feature/#52-only-store-new-commands-in-history合并至 shimatta/develop

作者	SHA1 备注	提交日期
prozessorkern	c7f238c005 fixed comments	4 年之前
prozessorkern	0b0a52d898 fixed the history buffer when there is an overflow	4 年之前
prozessorkern	e6b45952b3 added tests for shellmatta_history and improved documentation	4 年之前
prozessorkern	438e4c4d76 fix dirty flag	4 年之前
prozessorkern	ded69bc1f4 make mario happy	4 年之前
prozessorkern	88c33895f6 added check if the current entered command matches the last command in the history buffer - if the command is already stored it will not be stored again	4 年之前