v0.4.0

Changelog

eda8d3d "This week" wasn't properly displayed on a sunday
531847a ARR is now the amount after fees were paid
4b4ca9d Display total number of countries
a83f597 Add glossary
ca23427 Fix computation of churned users for the current month
34988aa Fix handling of sales of current week.
efb8c05 Group churned users by months paid
128d394 Improvements to churned users table
17ecce9 Preliminary churn rate, which also takes care of annual subscriptions
c3e53cb Show "First Purchase" in table of churned monthly users.
db36978 Show downloads per year, update random report.
6ce3e8d Show number of churned users per month
ed09555 Show paid-out amount as ARR
76ddedd Small fixes in yearly reporting to adjust for new year
bcc04e7 Small updates of report rendering
7aa8ca4 Testing report of sales on weekdays
12e17ef Update the random report [ci skip]
3c34598 add fallback font to display Chinese and others.
bd58394 show "new" in sales table next to customer, who purchased for the first time.
83d9c65 update styling of "new" badge in sales list