taxlist 0.1.3 (Release date: 2018-01-05)
  * new function 'add_trait'
  * argument 'level' in 'merge_taxa'
  * new function 'tax2traits'
  * function 'clean' also set classes of key words
  * bug in 'add_concept': wrong assignment of 'AcceptedName'
  * validation checks for the existence of accepted names in names list

taxlist 0.1.2 (Release date: 2017-08-06)
  * new function 'merge_taxa'
  * summary (taxlist-method): argument 'ConceptID' can be a character vector to
    match

taxlist 0.1.1 (Release date: 2017-07-23)
  * vignette 'taxlist-intro'
  * package 'vegdata' moved from Depends to Imports
  * function 'df2taxlist' adapted to species lists with duplicated names
  * arguments 'keep_parents' and 'keep_children' implemented in 'subset'

taxlist 0.1.0 (Release date: 2017-06-15)
  * version prepared for CRAN

taxlist 0.0.0.9014 (Committed on: 2017-03-19)
  * new validation rule: duplicated combinations 'name + author' are not allowed
  * data 'Easplist' modified to fulfil the last rule
  * new method 'as.list'

taxlist 0.0.0.9013 (Committed on: 2017-03-16)
  * new object class 'coverconvet'
  * methods for 'coverconvert'
  * function 'transform' to convert cover codes into percentage
