2.5

Updated bundled libraries:

• kotlin-stdlib: v1.3.61 -> v1.4.21
• kotlinx-coroutines: v1.2.0 -> v1.4.2
• jetbrains-annotations: v13.0 -> v20.1.0
• removed kotlinx-atomicfu (this was an erroneous dependency added by
  an earlier version of kotlinx-coroutines and wasn't used for anything)

Changes to LazyFont:

• Rewrote DrawableString to use vertex buffers instead of display lists.
  This should fix a bug that caused text corruption and visual glitches
  when DrawableStrings were rendered in the campaign layer

Deprecated in LazyFont:

• Deprecated drawText(String text, float x, float y, float fontSize,
  float maxWidth, float maxHeight), use createText() instead