version 0.4.1

added extra query operators: eq, has_substring and | to support the query syntax of cbsopendata.
updated documentation

version 0.3.5

fixed an issue with the vignette, which was failing when the webservice was offline

Added a new function cbs_get_data_from_link to allow for retrieving data using a link created with the opendata portal. Thanks to Albert Pieters for the suggestion
Improved the base_url default value.
fixed a bug in cbs_get_data, key columns were not always loaded as character columns (issue #15). Thanks to @VincentKars

removed httr and changed to jsonlite::read_json. httr gave problems with some Windows configurations.
fixed cbs_get_toc with select argument (issue #12). Thanks to Rob van Harrevelt.

changed api: all (new) functions are prefixed with cbs_ to have a more clean programming interface.
old functions are still available and working but are deprecated.
verbose=FALSE and cache=TRUE by default: (for new functions).
get_table_list renamed to cbs_get_toc
data by default is typed: converted to the numeric representation (was not the case)
data is not recoded anymore, but label columns can be added to the data set by using cbs_add_label_columns.
View shows the column title.
cbs_add_date_column adds a column with the period converted to Date or numeric.

added with strip.whitespace to get_data (issue #4), suggestion of Jonathan de Bruin
changed address of opendata to https variant.