nschloe/matlab2tikz — pull request #388 by okomarov (2014-10-29 11:42:44+00:00)
Title: [Add] addToOptions: extend to allow duplicate key but different val

Following comment https://github.com/nschloe/matlab2tikz/pull/386#discussion_r19507216, extend `addToOptions` to allow for multiple same key pairs but different value, e.g. for multiple colormaps.