Add last day of month

[rdehuyss]

Hi Ahmed,

as I saw your solution, I also added an extra option to add the last of month.

Hope you like it!

[asahaf]

Thanks, we need to make sure that we can handle the case when both last day of month and last specific day of the month are specified.

[asahaf]

The current solution is when the last day of the month is specified, the last week day of the month is ignored. Should we throw an exception of invalid expression if both are specified?

[rdehuyss]

That's indeed a good idea.

[asahaf]

could you please update the PR

[rdehuyss]

Done!

[asahaf]

great! thank you