ILSAmerge 1.4.2

• Replaced errors with messages when online resource is not available.

ILSAmerge 1.4.1

• Added support for TIMSS Longitudinal 2023.

ILSAmerge 1.4.0

• Added support for LaNA 2023.
• Added maxtime argument to ILSAready().
• Added support for ICCS 2022.

Remaining issues

• No unzip of PISA and TALIS downloads.

ILSAmerge 1.3.8

• Solved an issue with mistoNAs() when haven was not loaded.
• Solved an issue for weird behavior of mistoNAs() with ICILS 2013.
• Solved an issue with ILSAready() when filetype is not declared.
• Fixed a bug in untibble().
• Fixed a bug in addSchools().

ILSAmerge 1.3.6

• Added support for TIMSS 2023.
• Added support for ICILS 2020 Teacher Panel.
• Added support for ICILS 2023.
• Fixed bug in justload().
• Fixed bug in readILSA().

ILSAmerge 1.3.5

• Fixed an issue for saving ‘SPSS’ files.
• Added new functions for tibble management: asthistibble(), get.atr(), get.nas(), get.varlab(), mistoNAs(), untibble(), and whichcol().

ILSAmerge 1.3.0

• Added ILSAready() and ILSAreadylocal() as wrappers for downloading, merging, combining respondents, and renaming.

ILSAmerge 1.2.5

• Added combineStudents() for combining achievement and background questionnaires.
• Added addSchools() for adding school data.
• Added labels to countries and creates variables with country codes and country names.

ILSAmerge 1.0.5

• Added ILSArename() for creating comprehensible file names.
• Fixed a problem caused by PIRLS 2021 having an empty dataset.
• Fixed a problem with merging dates for TIMSS 2011.
• Fixed a problem originated from PIRLS 2001 with its multiple capitalization styles.

ILSAmerge 1.0.1

• Added extensive new documentation.
• Added availableILSA() to check which ILSA can be downloaded.

ILSAmerge 1.0.0

• CRAN submission.
• Added PISA and TALIS to ILSAdownload().
• ILSAdownload() connects to GitHub to check for most recent links.

ILSAmerge 0.8.4

• Fixed internal argument checks.
• Added ILSAdownload() for downloading ILSA ‘SPSS’ datasets.

ILSAmerge 0.8.1

• Added justload() to load files in a list but not merge them or save them.

ILSAmerge 0.8.0

• Initial version