#53 Only store command in history buffer when changed

Sapludināts

shimatta sapludināja 6 revīzijas no shimatta/feature/#52-only-store-new-commands-in-history uz shimatta/develop 4 gadi atpakaļ

Autors	SHA1 Ziņojums	Datums
prozessorkern	c7f238c005 fixed comments	4 gadi atpakaļ
prozessorkern	0b0a52d898 fixed the history buffer when there is an overflow	4 gadi atpakaļ
prozessorkern	e6b45952b3 added tests for shellmatta_history and improved documentation	4 gadi atpakaļ
prozessorkern	438e4c4d76 fix dirty flag	4 gadi atpakaļ
prozessorkern	ded69bc1f4 make mario happy	4 gadi atpakaļ
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 gadi atpakaļ