modisfast 1.0.0

Breaking changes

adding unit tests to test the functionality of the package (see file test/testthat.R) (#11, #15).
mf_modisfast() : new function which enables to execute the whole workflow (login, get URL, download data, and eventually import data) at a glance.

New features

adding three modes for verbose mode : quiet, inform, debug (#13).
using the cli package for textual outputs in verbose mode.

Minor improvements and fixes

mf_get_url() and mf_download_data() : including information on maximum file size expected (when verbose).
mf_import_data() : default projection now set to source projection of the data.
mf_import_data() : collection_source renamed collection.
solving an issue with tile merging at extreme latitude.
slight modifications in the Contributing.md file (#8).
slight modifications in the vignettes (#13)
improve comments in verbose mode