Log Message:
py-xlsxwriter: updated to 1.0.8

Release 1.0.8:
Added named exceptions to XlsxWriter. See The Exceptions Class.
Removed the implicit close() in the destructor since it wasn’t guaranteed to \ 
work correctly and raised a confusing exception when any other exception was \ 
triggered. Note that this is a backward incompatible change. The with context \ 
manager is a better way to close automatically, see close().
Added border, fill, pattern and gradient formatting options to set_legend().
Added top_right position to set_legend().