add more transition types

On the heels of #1849 being closed (via https://github.com/plotly/plotly.js/pull/3217), here's a list of new transition types/tweens that we'll want to add, probably piece by piece, trace by trace:

• mark position tweening for all scatter types, and for bars (i.e. ranked bars that change rank)
  • bar position tweens done in #4180 and #4186
• size tweening for everything that has a size: marker size for all scatter traces, height of bar/barpolar, box and violin parameters, text elements
  • bar height tweens done in #4180
• color tweening for everything that has a color: bars, choropleths, boxes, whatever
  • bar color tweens done in #4180
• range tweening for everything that has a range

• bar text color and font-size tweening https://github.com/plotly/plotly.js/pull/4186#issuecomment-533699952

首先查看 #1849、#4180 和 #4186 中引用的过渡工作，包括关于条形文本颜色和字体大小的遗留评论。使用此 issue 中的清单确定还剩下哪些位置、大小、颜色和范围 tweening 领域；完成意味着适用的已列出 trace 类型支持这些过渡。