1.2.0

@sevbanBayir

New in this version

Contributions guidelines
Demo app improvements and release: https://play.google.com/store/apps/details?id=com.hd.charts.app
Animations improvements: bar, pie, line chart
Multi line chart
Chart data validations
Improved charts usability
Readme update

Preventing dragging circle in the line chart to excess the canvas boundaries by @sevbanBayir in #51
Add contributions guidelines by @dautovicharis in #57
Develop by @dautovicharis in #59
Add app icon by @dautovicharis in #60
Add privacy policy by @dautovicharis in #61
Improvement/bar chart animation by @dautovicharis in #62
Add option to hide legend for stacked bar chart by @dautovicharis in #63
Improvement/animations by @dautovicharis in #64
Feature/multi line chart by @dautovicharis in #66
Code improvement by @dautovicharis in #67
Improve pie chart performance by @dautovicharis in #68
Improvement/general by @dautovicharis in #69
Improvement/app demo by @dautovicharis in #70
Improvement/app demo by @dautovicharis in #72
Update docs by @dautovicharis in #73
Improve pie chart animation by @dautovicharis in #74
Improve line chart animation by @dautovicharis in #75
Update app version by @dautovicharis in #76
Add strokeWidth to the style options for a pie chart by @dautovicharis in #77
Implement data validation for stacked bar and multiline chart by @dautovicharis in #78
Improvement/pie chart by @dautovicharis in #79
Improvement/app demo by @dautovicharis in #80
Refactoring/styles by @dautovicharis in #81
Update/readme by @dautovicharis in #82
Improve app demo by @dautovicharis in #83
Update README.md by @dautovicharis in #84
Update docs by @dautovicharis in #85
Develop by @dautovicharis in #86
Update version by @dautovicharis in #87
Update version (#87) by @dautovicharis in #88

Full Changelog: 1.1.0...1.2.0