R: Vignettes and other documentation

# Vignettes and other documentation

## Vignettes from package 'propr'

propr::a_introduction |  | 1. An Introduction to Proportionality | HTML | source | R code
propr::b_visualization |  | 2. Understanding Proportionality through Visualization | HTML | source | R code
propr::d_advanced |  | 3. A Brief Critique of Proportionality | HTML | source | R code
propr::e_differential |  | 4. An Introduction to Differential Proportionality | HTML | source | R code
propr::f_moderation |  | 5. Moderating Differential Proportionality | HTML | source | R code
propr::g_questions |  | Frequently Asked Questions | HTML | source | R code