v0.7.0

Fixed issues with fredmd() and fredqd() that are related to the changing format of the csv files on https://research.stlouisfed.org/econ/mccracken/fred-databases/.

v0.6.0

Corrected errors in tw_apc and tp_apc when re_estimate=T, and center=T and/or standardize=T

Corrected fredmd, fredqd, describe_md, and describe_qd function

Previously, I used fixed transformation codes and fixed internal dataset for variable names. However, the number of variables keeps changing over time (data access issues forced the authors to drop some variables in recent years). So now the fredmd and fredqd functions require users to supply a csv file (downloaded from the FRED-MD/QD website), and the transformation code is read from that csv file.

The output of fredmd and fredqd is now a dataset with fred variable names as column names. On the other hand, descibe_md and describe_qd now require input strings of fred variable names, such as:

varnames <- describe_md(c("RPI", "RETAILx"), name.only = TRUE, verbose = FALSE)

Added the FRED-QD functionality

v0.2.0

Added FRED-QD functions