v0.10 WIP

New Features

• subplots #168 (comment), #203
• aligned plots #168 (comment), #144
• initial fit and auto fitting #168 (comment)
• custom tick label formatting #168 (comment)

Bug Fixes / Improvements

• fix y-axis log scale for histograms and bar charts #244
• fix SampleColormapU32 return value #213
• fix GetColormapSize return value #241
• add big warning about 16-bit ImDrawIdx to demo and README #228
• fix potential division by zero #229
• fix max inclusivity issue when fitting #236