---
title: "Google Summer of Code Contributions"
author: "Lorenz Walthert"
date: "`r Sys.Date()`"
output: rmarkdown::html_vignette
vignette: >
  %\VignetteIndexEntry{Google Summer of Code Contributions}
  %\VignetteEngine{knitr::rmarkdown}
  %\VignetteEncoding{UTF-8}
---

```{r}
knitr::opts_chunk$set(eval = FALSE)
```

This vignette aims to summarize the contributions made to styler through Google
Summer of Code 2017.
We can use the package `gitsum` to perform an analysis of the GitHub repository.
```{r}
library("gitsum")
library("tidyverse")
log <- git_log_detailed() %>%
  filter(date > as.Date("2017-06-01"), date < as.Date("2017-08-31"))
```

We can see that the vast majority of the commits in this period comes from the 
student and a few from the main mentor.
```{r}
log %>%
  group_by(author_name) %>%
  count()
```
