Alpha version 0.2.0

General

• Several refactors
• Remove sketch mode (661979a)
• Remove formula mode (09d3c91)
• Remove left panel (309f0e5)
• White theme by default (b1bb1a8)

Features

• Save indicator (24939aa)
• Add math formula editor (8fdfd91)
• Support KaTeX and AsciiMath (829c938)

Bugs

• Fix KaTeX fonts (173258c)
• Fix buttons on Linux (896de18)
• Fix several store issues (ee7a427, b2db0e6)
• Fix save as shortcut on Windows (9a98d0b)