- Add error return value for functions: `AddChart()`, `AddComment()`, `AddPicture()`, `AddShape()`, `AddTable()` and `SetConditionalFormat()`
- go test has been updated

- Using the canonical syntax in issue template and contributing guide;
- go test has been updated

- go test and godoc has been updated

- Update the function `NewSheet()` to handle when already exists a worksheet of the same name, relate pull request #196;
- go test and godoc has been updated

- godoc updated

- godoc updated

Signed-off-by: Ri Xu <xuri.me@gmail.com>

- API changed, use worksheet name instead of "sheet" + index, related issue #25, #43, #47, #51, #89, #101, #116 and #120.
- go test updated

- go test updated

Adds a '{' to the example for sheet.GetSheetMap()
Signed-off-by: NMark Stenglein <mark@stengle.in>

- Make function `TitleToNumber()` exportable, note that function `ToAlphaString()` return value calculation changes, get more info from go doc. Relate issue #63;
- Readme and go doc updated

- go test updated

- Drawing `nvPicPr` element ID property calculation changed;
- go test updated

- go test updated

- Typo fixed;
- go test updated

Fix return index error in function `GetSheetMap()`;
Fix return worksheet name error in function `GetSheetName()`;
go test updated

- Optimize deserialization operations;
- README updated, add go version required notice

- go test updated

- go test updated

- Character limits for cells added;
- Update go test and fix typo

- Add escape characters of sheet name;
- Update go test and fix typo

- New functions `GetActiveSheetIndex`, `GetSheetName` and `GetSheetMap` added.