Version 0.6.4.104 (EA Beta)

* Improvements
- added income to the contract view
- new notification when resources near-critical limit
- don't show old notifications anymore
- add money when the tier is unlocked
- adjusted scheduled airline flight bg color and fit year numbers in research window
- added a new status "deploying" for loaders
- toggle on-demand panel on the "Z" hotkey button

* Balance
- fuel service performance and price nerf
- research performance and price nerf
- disabled researches at nighttime
- forbidden to have more than 5 not scheduled contracts simultaneously

* Bug fixes
- minor localization fixes
- fixed not enough resource notification when no delivery contracts were signed
- fixed take/give intervals for loaders
- fixed info panel for supply truck crash
- fixed a crash in contract view
- fixed tier availability after loading save file
- fixed a crash when loading while a land piece is selected
- fixed a crash with new era
- fixed a crash related to the traffic system after loading
- fixed instant loading right after buying vehicles
- fixed a crash during loading related to progress action