gridsample v0.2.1 (Update date: 2017-04-05)
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Changes:
* Linting
* Fix cfg_desired_cell_size and aligns with paper (https://doi.org/10.1186/s12942-017-0098-4)
* Implements cfg_random_number as specified in paper (https://doi.org/10.1186/s12942-017-0098-4).
* Modifies file paths for interoperability in vignette.

gridsample v0.2.0 (Update date: 2017-04-05)
==============

Changes:
* Added Rwanda 2010 DHS vignette
* Added cfg_psu_growth parameter to enable or disable PSU growth
* Fixed incorrect usage of cfg_max_psu_size
* Additional documentation and example in gs_sample()
