Number of days is not correct

[medou-boushab]

Hello Vincent,
Thanks for this great library.
We use the library in our project, and we discover that the nb of days in the selected month is not correct for example February is always 31 days.

would you accept a fix for this, I have two solutions for this
1- To change the value of monthDaysWithLasts :
monthDaysWithLasts: {
'1': ["1W"].concat(r(r(new Array(31)).map(function(e,t){return"".concat(t+1)})),["LW","L"]),
'2': ["1W"].concat(r(r(new Array(new Date(new Date().getFullYear(), 2, 0).getDate())).map(function(e,t){return"".concat(t+1)})),["LW","L"]),
'3': ["1W"].concat(r(r(new Array(31)).map(function(e,t){return"".concat(t+1)})),["LW","L"]),
'4': ["1W"].concat(r(r(new Array(30)).map(function(e,t){return"".concat(t+1)})),["LW","L"]),
'5': ["1W"].concat(r(r(new Array(31)).map(function(e,t){return"".concat(t+1)})),["LW","L"]),
'6': ["1W"].concat(r(r(new Array(31)).map(function(e,t){return"".concat(t+1)})),["LW","L"]),
'7': ["1W"].concat(r(r(new Array(31)).map(function(e,t){return"".concat(t+1)})),["LW","L"]),
'8': ["1W"].concat(r(r(new Array(31)).map(function(e,t){return"".concat(t+1)})),["LW","L"]),
'9': ["1W"].concat(r(r(new Array(3)).map(function(e,t){return"".concat(t+1)})),["LW","L"]),
'10': ["1W"].concat(r(r(new Array(31)).map(function(e,t){return"".concat(t+1)})),["LW","L"]),
'11': ["1W"].concat(r(r(new Array(30)).map(function(e,t){return"".concat(t+1)})),["LW","L"]),
'12': ["1W"].concat(r(r(new Array(31)).map(function(e,t){return"".concat(t+1)})),["LW","L"])
}

2- to calculate monthDaysWithLasts in a separate function

what do you think?

[vincentjames501]

@medou-boushab , happy to accept a PR! I'd prefer a function to construct the above objects instead of it being hard coded.

[medou-boushab]

Here is my PR #58
I wanted to test my changes locally but I didn't manage to do the build, can you send me the build steps
thanks