v1.5.2

Fix

• fix: support standby screen states, thanks to @Tommypop2 #232
• fix: unsupported color mode, thanks to @mattplate #236
• fix: update progress validation #241

Feature

• feat: add app update indicator #70
• feat: clear cache on refresh, thanks to @TMA84 #217
• feat: support display brightness without sudo, thanks to @Tommypop2 #233
• feat: refine sudo permission checks #111

Refactor

• ref: default mqtt user
• ref: mqtt retain logic
• ref: max brightness clamping

Documentation

• docs: update jsdocs
• docs: update readme
• docs: update hardware