fred 0.2.0

New features

• fred_series() gains a format argument. Pass format = "wide" to get one row per date with a column per series, instead of the default long layout.
• fred_series() gains a transform argument with readable aliases for the FRED units codes: "level", "diff", "yoy_diff", "qoq_pct", "yoy_pct", "annualised", "log", "log_diff", and more. The raw units codes still work; transform and units are mutually exclusive.
• New real-time and vintage helpers built on the ALFRED endpoint:
  • fred_as_of() returns a series as it appeared on a chosen vintage date.
  • fred_first_release() returns only the initial release of each observation, with no subsequent revisions.
  • fred_all_vintages() returns the full revision history.
  • fred_real_time_panel() returns the values that were available on each of a chosen set of vintage dates.
• New fred_cache_info() reports the cache directory, file count, total size, and per-file metadata. Useful for debugging stale results.
• All observation results are now returned as fred_tbl, a thin data.frame subclass with a one-line provenance header showing the query (series count, observation count, units, transform, frequency, vintage). The header is informational; downstream code can keep treating the result as a plain data frame.

Internals

• The cache key format is unchanged for default arguments, so caches built under 0.1.x are still picked up after upgrade. Realtime, output-type, and vintage requests are cached under distinct keys.

fred 0.1.2

• Removed non-existent pkgdown URL from DESCRIPTION.

fred 0.1.1

• Examples now use \donttest with tempdir() cache instead of \dontrun, fixing CRAN policy compliance.
• Cache directory is now configurable via options(fred.cache_dir = ...).

fred 0.1.0

• Initial CRAN release.
• Core function fred_series() for fetching one or more FRED time series.
• Server-side unit transformations and frequency aggregation.
• Local caching of downloaded data.
• Search, category, release, source, tag, and vintage endpoints.