Merge branch 'hotfix/encoding-issue'
Merge branch 'release/v1.5.1'
chart accessor is a function now
updated chart to new vis api
build
theme accessor is a function
fixed core api
fixed chart editor
fixed column chart
fixed bar charts
fixed grouped/stacked column chart
fixed line charts
fixed pie chart
fixed raphael chart
fixed chart editor
fixed data table
Merge branch 'hotfix/fix-chart-api' into develop