Added more syntax improvements!

Else if: Added support for else if, which replaces big blocks

//Before:
if(triangles[14].y1 >= 15) {
        looks::say(">=15");
    } else {
    if(triangles[14].y2 >= 155) {
        looks::say("<=15");
    } else {
        looks::say("Both false!");
    }
}
//After:
if(triangles[14].y1 >= 15) {
        looks::say(">=15");
    } else if(triangles[14].y2 >= 155) {
        looks::say("<=15");
    } else {
        looks::say("Both false!");
    }

Compound assignment: Added support for compound assignment

//Before:
triangles[15].y3 = triangles[15].y3 + 5;
//After:
triangles[15].y3 += 5;

Enums: Added support for enums, which are just fancy integer wrappers

enum TriangleRenderMode(OFF, RENDER, ITHINK);

TriangleRenderMode mode = TriangleRenderMode.OFF;

When: Added support for when expressions/statements that allow for matching a subject:

//Before:
if(answer == "off") {
    mode = TriangleRenderMode.OFF;
} else if(answer == "render") {
    mode = TriangleRenderMode.RENDER;
} else {
    mode = TriangleRenderMode.ITHINK;
    looks::say("If thinking is your power, what are you without it?");
    return;
}
//After:
TriangleRenderMode mode = when(answer) {
    "off" -> TriangleRenderMode.OFF
    "render" -> TriangleRenderMode.RENDER
    else -> {
        looks::say("If thinking is your power, what are you without it?");

        TriangleRenderMode.ITHINK;
    }
};