Changes in version 1.1.0 (2021-03-05)
+ State vectors can now be retrieved through the Impala shell
+ Multiple clustering algorithms for trajectories are now available
+ Airport metadata can now be embedded in several data structures
+ All functions retrieving flight instances can also retrieve associated state vectors

Changes in version 1.0.0 (2021-01-25)
+ Major update to the provided functionalities and data structures 
+ Aircraft metadata can now be retrieved with getAircraftMetadata
+ Airport metadata can now be retrieved with getAirportMetadata
+ Route metadata can now be retrieved with getRouteMetadata
+ One or more routes can now be plotted with plotRoute and plotRoutes
+ Location of aircrafts can now be plotted with plotPlanes
+ System of R6 classes for aircraft location data established
+ R6 classes include additional methods for performing relevant operations
+ Clustering analysis of trajectories can now be performed with clusterRoutesDBSCAN

Changes in version 0.99.4 (2020-11-11)
+ Added additional checks to results of queries
+ Added informative messages to failed requests

Changes in version 0.99.3 (2020-10-24)
+ Added link to OpenSky website in DESCRIPTION

Changes in version 0.99.0 (2020-10-14)
+ First version
+ Submitted to CRAN
