Remove the "function F() { if (!(this instanceof F)) { return new F() }; … }" anti-pattern

[slashrsm]

https://stackoverflow.com/questions/22211755/function-f-if-this-instanceof-f-return-new-f

The idea behind this construct is to allow object instatiation without the new keyword. We discussed this in one of our calls and agreed that this probably isn't the best practice. It also creates unecessary noise in the code so let's remove this.