v1.9.1

Fix wrongly increased column number when a column span greater than two is used (issue #40).

v1.9.0

Optionally force writing cell references for compatibility with some readers, thanks to Mikk182; header and footer functionality thanks to soend

v1.8.0

Ability to hide grid lines and row and column headers from worksheets, thanks to Rajeev Datta

v1.7.4

Fix culture problem in stylesheet (pull request #28)

v1.7.3

Fixed ContentType for PowerBI compatibility (pull request #23).

v1.7.2

Add app.xml metadata to identify file producer.

v1.7.1

Performance improvements.

v1.7.0

Write overload for booleans, more performance improvements

v1.6.3

Improved performance of style lookup.

v1.6.2

• Short-circuit the expensive lookup for default style by @AntonyCorbett in #15
• Fixed XlsxFont's With methods to include underline
• Upgraded dependencies