Version 0.5.1.22
* Improvements
- tutorial window(available in the pause menu, some parts will be added soon)
- implemented closing research info window on pressing ESC button
- added information about remaining attempts for the flight to the schedule window
- slightly better performance for the schedule window
- added flight number and cycle to the contract info in the contract
window
- implemented hiding the research button badge after clicking on the research indicator in the hud
- adjusted contracts sign area buttons in the contract window, and the progress background in the airliner window
- adjusted the cycles count bg in the flight blocks
- added an explanatory tooltip for the flight block cycle count
- show year for save files
- stopped mail service from showing instead cargo hosting is shown
- reset a speed when close the pause menu
- changed boarding service icon color in the schedule window
- added and FokkerF27
- enabled a possibility to start road from the middle part of building the embedded road

* Bug fixes
- fixed runway arrow texture remains active after the runway window was closed
- fixed that loaded game could have fast-forward locked
- fixed pathfinding issues
- fixed a crash when the penalty sort button is pressed
- fixed minor no connection to a world issue
- fixed a potential crash when changing a grid step
- fixed schedule sort behavior
- fixed a possibility to start road from the embedded road, when it was restricted by embedded road
- fixed crash when belt loader fails to find a spot on a tarmac ramp
- fixed wrong penalty for contract canceling
- fixed filtering in contract window
- fixed text formatting for some contract fields in the contract window
- fixed filtering in the contract window
- fixed building a new storage building doesn't increase the amount in the hud indicator
- fixed a possibility to place a large building on the opposite side from 2 small buildings
- fixed supply resources logic
- fixed crash when switching off facilities from supply management window after loading
- fixed roads material for buildings
- fixed a crash when placing a new building close to cross roads