Renaming function 'delationErosion' to 'dilationErosion'

[mirickmi]

Hi,

thanks for this wonderful package. This is just a minor (terminology) issue but could you rename "delation" to "dilation"?

[mlampros]

@mirickmi
you are right. I'll make the correction in the next days and I'll add a deprecation warning for the 'delationErosion' function
thanks for making me aware of this issue

[mlampros]

I submitted the updated version to CRAN ('1.2.6'). The new function dilationErosion() replaces the old one ('delationErosion') and the 'delationErosion' will be entirely removed in version 1.3.0