Changes in irtDemo version 0.1.4

• Allowed 0 (zero) discrimination in some applications
• Bug fixes for MIRT information plot

Changes in irtDemo version 0.1.3

• Removed online dependency

Changes in irtDemo version 0.1.2

• Exported irtDemo function in NAMESPACE
• Added README file
• Added NEWS file

Changes in irtDemo version 0.1.1

• Bug fixes for “est2pl” and “est3pl” applications

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