- fixed possible wrong location for a new egg sometimes
- add incubation planet depletion, with each incubation it may blow to shattered planet depending on planet size or become just an asteroid after all
- failed incubation leaves remnants of dragon embryo as alloy and mineral deposits

Replace Deep Crust Engineering with Deep Core Mining tech as more common. The first one is not available if your colonized planets have no related blocker.

- fix bug preventing improved hatchery to appear in techs

- fixed lost scope to get dragon armor tech option

- add chance to get special armor tech option even if dragon_armor is not yet researched
- name escaped dragon names system-based instead of planet, i.e. "Sol Beast" instead of "Sol I Beast"

- more work to reduce load of MTTH events
- fixed 'dragon fear' stations and aura effect
- reduce requirement for initial egg hatching to tier 2 techs in biology and mining. For improved hatchery you need to know tier 3 'Secrets of Life' and 'Deep Crust Miniing'

- improve performance of MTTH events
- update dragon plasma icons
- correct dragon fire stats a bit

- update rewards for failed egg incubation

- fixed wrong scope errors
- fix missed flag setting, can cause no high-level dragon hatchery to appear in tech

- force AI to hatch dragon eggs, it looks like they are not aware about any decisions on uninhabited planets no matter what ai_weight is being used