v0.19 - Labor rights and unemployment insurance, more gradual support changes

Major changes:

• New government affairs card: Labor Rights
• The unemployment insurance crisis can be handled preemptively using Labor Rights. In general, some of the flow around unemployment insurance has been changed.
• New advisor: Rudolf Wissell (labor)
• Party support changes are now more gradual, happening monthly instead of always at the start of the year. There are some tweaks to party support, with more support from middle-class and rural demographics flowing from Others and the DVP to the NSDAP to better account for historical election results.
• Tariffs can be changed as part of Fiscal Policy.

Minor changes:

• Some bug fixes and many minor tweaks.