The update included fixes for rare level-loss bugs and XP glitches, along with UI improvements like a dedicated Speedrun timer.
Our verdict? Instead, wait for a Steam sale (the game drops to $2.49 during Halloween and Christmas). For the price of a coffee, you get guaranteed safety, automatic updates to future versions (v1.10.3 is already in beta), and the ability to play with friends online.
Downloading version 1.10.2a ensures that you are playing the version of the game that the community widely regarded as the "turning point" for the game's stability before later major content patches.