Updated and added features to 'markets-picker.sh'
(1) Nefertiti dependency removed: Markets are queried directly from exchange.
(2) Increased run speed: Markets data is now pulled all at once with a single API call, then locally filtered.
(3) Replaced --minvol with --top: Instead of guessing trading volumes and give the script a fixed number, the result are now automatically ordered by volume and you only need to specify the --top amount of pairs you want.
(4) Added --maxchange: Increased flexibility for broader market conditions.
(5) File management (auomation): The resulting markets are also written to a file in CSV format in case you want to automatically feed them to a Nefertiti buy script. Previous file is always backed up with a timestamped filename.
To-Do:
(1) Standardize/clean-up % change math and variable names.
(2) Include blacklist to filter out unwanted pairs.