New pricing and a clearer Usage & Billing page

Usage from September 1 is priced on a new rate card. Usage before that date keeps the prices it was recorded under.

Voice calls cost less: 10 EHU per call.
Received alerts are now counted, at 1 EHU per alert.
The free monthly allowance is 200 EHU.
On-demand usage is $0.015 per EHU, with lower rates on a commitment or with prepaid credit.

The current rates are always on the pricing page.

The overview leads with money: your estimated bill for the month, what has been charged so far, and where you are in the billing cycle.
A bar shows how much of the free allowance is left, alongside your credit balance and, if you have one, your commitment.
A daily usage chart on the overview and usage pages.
The credit page separates credit you bought from credit granted to you, with its expiry date.
The month-end estimate takes your free allowance and credit into account, and is labelled as an estimate.
Usage is rounded up once on the month's total instead of on every line.

Closing a retro now makes it read-only. It can still be reopened.
Sign-up suggests a fix for a mistyped email domain and lets you show the password you typed.
EvoHub emails use the new logo and stay readable in dark mode.