# xefun 0.1.5 

* the 'to' argument in date_from function supports vector
* added an inner function dat_filter to filter data set by given date range

# xefun 0.1.4

* fixed a bug in the date_num function

# xefun 0.1.3

* added a new function date_num to convert date to number
* fixed a few bugs 

# xefun 0.1.2

* added cols_type and cols_const function
* fixed a bug in date_from function

# xefun 0.1.1

* Fixed a few bugs

# xefun 0.1.0

* Initial version
