recommended:
  - bipartite-graph-simple
  - bubble-chart
  - chained-transitions
  - compare-ipo
  - dot-bar-chart
  - japan-color
  - les-miserables
  - map-projection-distortions
  - multi-series-line-chart
  - parallel-coordinates
  - population-map-iran
  - radial-reingold-tilford-tree
  - sequences-sumburst
  - the-euro-debt-crisis
  - treemap
  - under-the-sea
  - wordcloud
statistics:
  - scatterplot-matrix-brushing
  - principal-component-analysis
  - principal-component-analysis-text
  - dcjs-example
example:
  - barchart-javascript
  - bubblechart
  - force-graph
  - japanmap-javascript
  - jthree-example
  - piechart-javascript
  - react-javascript
marathon:
  - virtual-tokyomarathon
  - virtual-toyamamarathon1
  - virtual-toyamamarathon2
  - virtual-tsukubamarathon
hackathon:
  - InfiniteElementMethod_E2D3-LIG_03
  - curry
  - food-analyzer
  - foot-race
  - jizou-javascript
  - piechart2-javascript
  - plain-barchart-javascript
  - suimin-checker
  - wanamin
  - barchart2-javascript
  - energy-radar-chart

recommended:
  - bipartite-graph-simple
  - bubble-chart
  - chained-transitions
  - compare-ipo
  - dot-bar-chart
  - japan-color
  - les-miserables
  - map-projection-distortions
  - multi-series-line-chart
  - parallel-coordinates
  - population-map-iran
  - radial-reingold-tilford-tree
  - sequences-sumburst
  - the-euro-debt-crisis
  - treemap
  - under-the-sea
  - wordcloud
statistics:
  - scatterplot-matrix-brushing
  - principal-component-analysis
  - principal-component-analysis-text
  - dcjs-example
example:
  - barchart-javascript
  - bubblechart
  - force-graph
  - japanmap-javascript
  - jthree-example
  - piechart-javascript
  - react-javascript
marathon:
  - virtual-tokyomarathon
  - virtual-toyamamarathon1
  - virtual-toyamamarathon2
  - virtual-tsukubamarathon
hackathon:
  - InfiniteElementMethod_E2D3-LIG_03
  - curry
  - food-analyzer
  - foot-race
  - jizou-javascript
  - piechart2-javascript
  - plain-barchart-javascript
  - suimin-checker
  - wanamin

Revert merge what is not working.
Revert merge what is not working.