chore: bump to release version 0.2.11

DESCRIPTION

 Package: airGRteaching
 Type: Package
 Title: Teaching Hydrological Modelling with the GR Rainfall-Runoff Models ('Shiny' Interface Included)
-Version: 0.2.10.114
-Date: 2021-02-05
+Version: 0.2.11
+Date: 2021-06-04
 Authors@R: c(
   person("Olivier", "Delaigue", role = c("aut", "cre"), comment = c(ORCID = "0000-0002-7668-8468"), email = "airGR@inrae.fr"),
   person("Laurent", "Coron", role = c("aut"), comment = c(ORCID = "0000-0002-1503-6204")),

NEWS.md

@@ -4,7 +4,11 @@
 
 
 
-### 0.2.10.114 Release Notes (2021-02-05)
+### 0.2.11 Release Notes (2021-06-04)
+
+#### Bug fixes
+
+- Fix `ShinyGR()` when the date column of `ObsDF` has another name as 'DatesR'. ([#38](https://gitlab.irstea.fr/HYCAR-Hydro/airgrteaching/-/issues/38))
 
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