Win64

Superseded by v0.0.7.
Testing this build turned up sorting, price formatting and auto-update
problems that are fixed there. Use 0.0.7.

CoinBrowser 0.0.6 for Windows 64-bit

The data comes from the exchange now. CoinMarketCap and its API key are
gone: Binance or KuCoin supply prices, volumes and the 24h change in one
request with no key, and CoinGecko supplies market cap, rank and the 1h
and 7d changes. Nothing needs signing up for, and the prices are the ones
that exchange would actually fill at.

Starting up and updating are no longer slow. The update ran one
database transaction and one query per coin, five thousand of each. It now
runs one transaction and one query in total. Measured on 5000 rows: the
inserts went from 13.6 seconds to 0.02, and the lookups from 2.0 seconds
to 0.04. Startup runs the same code, so it gained the same.

Also fixed:

• The comparison columns were computed against an empty table on any run
  that built one, so "DB +/- %" was a division by zero.
• "DB rank move" showed minus each coin's own rank on a new table.
• The Coins Id from-to boxes had nothing connected to them and did not
  reload the table.
• Get price in the simulator always returned 0, because the folder it
  writes to was never created.
• The simulator starts with a coin list and a 1000 stake instead of two
  empty fields.
• The donate addresses are current, and the copy button now copies the
  same ones the dialog shows.
• The status line says which table the comparison is against and how many
  coins it held.

Unzip anywhere and run coinbrowser.exe. Everything it needs is in the
folder - no Qt install, no runtime to fetch. Pairs are still read from
raw_.txt as before.