Update 0.4.3

Made some quality of life changes, such as being able to see whether techs are active on the main tech overview, as well as new events to let the player escape a game over screen (at the expense of doing something evil).

The biggest change (and most complex to code) is that you are now able to fire workers from workplaces! This is a real godsend in certain situations, such as when you change laws regarding who can work where, or simply fixing your own mistakes without having to restart the game.