prais 1.1.1

• Add function for semirobust standard errors (#2)
• Add functionality to expand factors to a set of dummy variables (#1)
• Small fixes in the documentation of prais_winsten() and summary.prais()
• Changed upper cases in GitHub link to lower cases in DESCRIPTION

prais 1.1.0

• Added a NEWS.md file to track changes to the package
• Added panel data functionality
• Updated documentation

prais 1.0.0

• Added S3 summary and print functions
• Added Durbin-Watson test to summary function

prais 0.0.1

• Initial release