atmoschem/vein: 0.3.2

I decided to jump into a new 'minor' version because it brings lots of cool improvements. vein imports sf functions. R packages -raster-, -rgdal- and -rgeos- not needed anymore. vein now imports data-table. Add class GriddedEmissionsArray. Fix #28, data.table imported in emis_grid. Now it is very fast! Fix #49: Documentation in inventory est. Fix #50: Fix repetition of x_DF. Fix #51: deparse text. Fix #52: separate objects in rm with ',' Fix #55. Minor fix on demo(VEIN). emis and emis_cold adjust length of ef by length of columns of first element of the list of data-frames. Revised all examples. Check the NEW