By Sascha O’Sullivan A year ago, it would have meant something to say it has been a momentous week in politics. Since my last column appeared, the Chancellor of the Exchequer has been dismissed, a crunch vote in the House of Commons has been won despite spectacular mismanagement by the government, and the prime minister has announced her resignation. Oh, and until last night a Boris Johnson comeback was looking increasingly likely. Many spectators are, I fear, fighting fatigue now more than breathless excitement. The speed at which our politics is happening, and the consistency with which the …