Record the actual location for newlines
Record the actual location for newlines

Otherwise backtracking in -[MMScanner setLocation:] could pick the
wrong line range.

gonefish/MMMarkdown,mdiep/MMMarkdown,albertbori/MMMarkdown,gonefish/MMMarkdown,albertbori/MMMarkdown,AgileBits/MMMarkdown,albertbori/MMMarkdown,iosdev-republicofapps/MMMarkdown,iosdev-republicofapps/MMMarkdown,AgileBits/MMMarkdown,mdiep/MMMarkdown