Daniil

Version 0.9.7 Stack trace ``` panic: runtime error: index out of range [18963] with length 17388 goroutine 75 [running]: github.com/shakinm/xlsReader/xls/record.(*LabelSSt).GetString(0xc0004033a0, 0xc15b6c, 0x10) /gocode/pkg/mod/github.com/shakinm/[email protected]/xls/record/labelSst.go:43 +0x70 github.com/shakinm/xlsReader/xls/record.(*Format).GetFormatString(0xc0000aaa20, 0x1043a20, 0xc0004033a0, 0x16d6740, 0x1) /gocode/pkg/mod/github.com/shakinm/[email protected]/xls/record/format.go:125...