Drill Action Fix | 钻头动作组修复

这个插件修复了KSP1.3.0中钻头动作组的错误。(KSP1.3.1中已修复)
OBSOLETED in KSP v1.3.1 — This is a patch to fix a known bug in KSP 1.3.0 that removed action groups from resource drills.