v0.2.8.4 CLEAN: keywords replaced by concepts to avoid NOTE during CRAN check

DESCRIPTION

 Package: airGRteaching
 Type: Package
 Title: Teaching Hydrological Modelling with the GR Rainfall-Runoff Models ('Shiny' Interface Included)
-Version: 0.2.8.3
+Version: 0.2.8.4
 Date: 2020-02-05
 Authors@R: c(
   person("Olivier", "Delaigue", role = c("aut", "cre"), comment = c(ORCID = "0000-0002-7668-8468"), email = "airGR@inrae.fr"),

NEWS.Rmd

@@ -14,7 +14,7 @@ output:
 
 
 
-### 0.2.8.3 Release Notes (2020-02-05)
+### 0.2.8.4 Release Notes (2020-02-05)
 
 
 #### New features

man/airGRteaching.Rd

@@ -84,4 +84,12 @@ For more information and to get started with the package, you can refer to the v
 
 }
 
-\keyword{hydrology, model, efficiency criterion, calibration, GR4J, airGR, student, teaching, shiny}
+\concept{hydrology}
+\concept{model}
+\concept{efficiency criterion}
+\concept{calibration}
+\concept{GR4J}
+\concept{airGR}
+\concept{student}
+\concept{teaching}
+\concept{shiny}