#### Major changes

• Adds three new keys (gsed2206, lf2206 and sf2206) that incorporate Phase 1 validation data for the GSED SF, GSED LF and BSID.
• Changes the default key to gsed2206. If you want the old behavior, specify key = "gsed1912" to functions that accept the key argument (dscore(), dscore_posterior(), get_age_equivalent(), get_tau()).
• Extends builtin_itemtable with names and labels for gpa (SF), gto (LF) and gsd (novel SF) items.
• Solves a long-standing issue #29 that gave different D-score under different transformation. This change affects solutions calculated with the metric = "logit" and transform parameters specified. The D-scores calculated under different transforms are now linear transformations of each other.

#### Minor changes

• Repairs a few problematic outbound URLs

#### Major changes

• Updates tau estimates for Mullen items in itembank covering a much wider age range: 65 out of the 85 Mullen items from previous itembank version have new tau estimates; 20 items are removed.
• Updates itembank with new Mullen items. There are 73 new Mullen items added to the new itembank. In total there are now 139 Mullen items in the itembank, estimates are based on PROVIDE and BAMBAM data.
• Moves sources to organisation repository D-score/dscore for increased visibility

#### Minor changes

• Repairs six incorrect BDS numbers in data-raw/data/bds)edited.csv
• Adds equate groups translated from the ddata package to builtin_itemtable
• Adds new itemtable_20200424.txt with minimal item definitions
• Adds 522 missing items that were defined in the ddata package
• Minimizes the data stored in builtin_itemtable
• The get_itemtable() function gets a new argument decompose for adding info from decomposed item names
• Solves warning from get_itemtable() when itemtable argument is specified
• Uses explicit drop = TRUE to account for new behavior in tibble 3.0.0
• Adds a facility to create a dynamic (on-the-fly) itemtable from specified item names in get_itemtable().
• The default rounding is now 2 (D-score), 3 (DAZ). Fixed rounding are now 4 (age) and 4 (p) decimals.
• There was a slight discrepancy in the calculation of DAZ between the dscore and clopus packages. The dscore package now first rounds the D-score and then calculate DAZ.
• The dscore() function now automatically select the prior_mean = ".dutch" option when the user specifies key == "dutch". This change repair an error in the D-score calculation that occurs when only key == "dutch" was given.
• The dscore() function now silently handles warnings that may result from taking the log of negative ages.
• Hi, welcome to dscore 1.0.0! For the development history, see https://github.com/D-score/dscore
• Added a NEWS.md file to track changes to the package.