Fix base 10 as default for LOG function

[nicolashefti]

According to Excel documentation LOG should be calculated with base 10 if omitted.

https://support.office.com/en-us/article/LOG-function-4E82F196-1CA9-4747-8FB0-6C4A3ABB3280

This feature was already implemented but was not correctly working.

Can you please create a minor release afterward to have an update of the CDN?

[nicolashefti]

Hi @Y--,

would it be possible to tag a new minor release (1.0.9)? This would allow to have a new version on CNDJs:

https://cdnjs.com/libraries/formulajs

Thanks in advance. Nicolas

[Y--]

Done