openpyxl 1.5.6

Small compatibility release this time, no big features added, see the changelog by yourself:

  • [iter_worksheet] add support for calculated strings (they have a special data type for that ?)
  • [strings] make sure we always use unicode strings everywhere
  • [iter] fixed max row and column detection for iter reader
  • [styles] fixed custom number format detection under OOCalc
However, a large effort has been made on supporting the whole python 2.4 – 2.7 range. In the past, 2.4 and 2.5 compatibilities were damaged, now it should be restored back to normal.
Once again, thanks to all the contributors for their help 😉