Changes in version 0.0.6                        

New Features:

  - Export varraw, varerr, covraw, and coverr for explicit variance and
    covariance adjustment
  - Simplify the argument in unitdid for new column names (newnames)

Bug Fixes:

  - varerr and coverr is not correctly estimated when k_min is not 0
  - Formula for varerr and coverr was incorrect (v0.0.6.1)

                        Changes in version 0.0.5                        

New Features:

  - Support for unit-level covariance estimation, which allows for more
    flexible aggregation using the covariance matrix
  - Add only_full_horizon option for get_unitdid()

                        Changes in version 0.0.4                        

New Features:

  - Support for unit-level variance estimation, which allows for more
    flexible aggregation of the variance estimation
  - Add allow_negative_var option to allow for negative variance
    estimation, which used to be automatically trimmed at 0 (v0.0.4.1).

Bug Fixes:

  - Measurement error (zz000varcont in the code) is not esimated with
    weights (#11)

                        Changes in version 0.0.3                        

New Features:

  - Support for first_stage argument for more parametric first stage
    estimation
  - Support for by argument for aggregation

Bug Fixes:

  - Bug when data[[yname]] includes NA values
  - Bug when variance estimation includes NA values (v0.0.3.1)
  - Bug when by does not have a higher category (v0.0.3.2)

                        Changes in version 0.0.2                        

New Features:

  - Support for wname argument for weighted estimation

Bug Fixes:

  - Normalization in summary when normalized = FALSE in the model
  - Bug when data[[tname]] includes NA values

                        Changes in version 0.0.1                        

  - Initial GitHub submission