Changes in version 1.0.0                        

This is a ground-up rewrite. dataseries.org now serves its data through
a public API (https://api.dataseries.org), and the package has been
rebuilt around it. The old flat series identifiers (e.g. "CCI.AIK") no
longer exist, so this release is not backward compatible.

New data model

  - Data is now organized into datasets, most of which are
    multi-dimensional cubes. A single series is one cell, addressed by a
    dataset plus one code per dimension.

New and changed functions

  - ds(dataset, ..., from, to, class) is the new download function. The
    first argument is a dataset id; dimension filters are passed as
    named arguments (e.g. ds("ch_seco_gdp", type = "real", structure =
    "gdp")). The default data.frame is returned in long (tidy) format;
    class = "ts" lays the selected series out as columns. The xts option
    (and the xts dependency) has been dropped, as all series are
    regular-frequency and covered by ts.
  - ds_catalog() lists all datasets (replaces inventory()).
  - ds_search(pattern) is a flat, searchable list of the individual
    series across all datasets — the finest-grained way to discover what
    exists.
  - ds_meta(dataset) returns a dataset's dimensions and codes, for
    discovery.
  - inventory() is deprecated; it now warns and calls ds_catalog().
  - cache_ls() / cache_rm() continue to manage the in-memory cache.

                 Changes in version 0.2.0 (2017-04-29)                  

  - supports class = "ts".
  - new function inventory(), returns a data.frame with all series on
    www.dataseries.org.

                 Changes in version 0.1.0 (2017-02-17)                  

  - initial release.