11/10/2017:
- switch to C++11

-------- version 0.0.2 (start)  -------------

11/22/2015:
- accept table:number-colums/rows-repeated when reading a
  table or converting a spreadsheet in table
- try to recover picture with cell's anchor in a table.

-------- version 0.0.1 (start)  -------------

12/4/2014:
- begin to reconstruct list (still basic implementation)

-------- version 0.0.0 (start)  -------------
