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+# Changelog
+
+## version 0.6.5
+
+- R/PEC_sw_drainage_UK.R: Create a function `drainage_date_UK` that does
+  not only respect the beginning of the drainage period on 1 October,
+  but also the end of the drainage period on 30 April, and use it for
+  determining the degradation time. Applications early in the year
+  before 1 May will now correctly be calculated without degradation
+  time.
+
+- R/PEC_sw_drift.R: Vectorise the function not only with respect to
+  distances, rates and water depths, but also with respect to crop
+  groups. Closes issue [\#2](https://github.com/jranke/pfm/issues/2)
+  reported by Julian Klein ([@juklei](https://github.com/juklei)).
+
+## version 0.6.4
+
+- R/PEC_sw_drainage_uk.R: Fix a bug preventing the function to work of
+  `latest_application` is set to 29 February. Also, make this function
+  correctly deal with units.
+
+- R/twa.R: Fix a bug in plotting one-box models of class `one_box` that
+  affected plots that displayed a time weighted average.
+
+- R/PEC_sw_drainage_uk.R: Fix a bug leading to increased PEC values in
+  the case the application date is after the beginning of the drainage
+  period and `soil_DT50` was specified.
+
+## version 0.6.3
+
+- R/{PEC_sw_drift,PEC_sw_exposit_runoff,PEC_sw_sed}.R: Make use of the
+  `units` package.
+
+- R/PEC_sw_drift.R: Change argument name from ‘crop_group_focus’ to
+  ‘crop_group_RF’, in order to make it easier to understand the relation
+  to the ‘drift_data’ argument.