In this update I added some major updates, which change the game noticeably: endless-mode, localisation, main-menu-rework and other changes.
Here is a complete list of all the new features:

Endless-Mode:
The most important addition of the update is the new endless-mode. It was made possible due to the new way of generating the chimney from the last update. The endless-mode was a request off nearly all the people, who managed to beat the finite levels. It offers something to play afterwards and is a way to truly compete with others.

Scoring:
Connected to the addition of the endless-mode, the scoring-system received upgrades too. First of all every game mode has its own score now, which is shown in the level selection.  Additionally the tutorial and the three classic levels are now valuated trough a clear rate. Which means you can now clearly see, how much distance you have left to go to complete the respective Level. The relative clear rate is currently just displayed in the main menu. When the level-UI gets its rework in the next update, the clear rate will be displayed there too.

Main Menu:
The main menu got a total rework. All graphics have been replaced with new ones. We have a new level selection. And since the is / will be much more content that can fit on a single screen, smooth horizontal swiping is now possible.

Localisation:
An easily expandable language-system is now implemented. The current languages are English and German, since those are the only ones I am capable of. (If there is anyone out there who is interested to translate round about 30 small textboxes, I always appreciate it.)

New Background:
The old background got replaced with a fancy new one: five layers of parallax, new 2D graphics and cute little birdies.

Other small updates and fixes:
- The UI in the main menu scales now properly (and easy!) with different screen sizes.
- Better use of sprite-atlases
- Small code updates