-Difficulty chart would fail to populate if the shared_pages.difficulty setting was 'Hybrid' and is now handled properly. The chart now supports 2 datasets: POW and POS
-NetworkHistory.difficulty field was renamed to difficulty_pow and a new difficulty_pos field was added
-The shared_pages.page_header.network_charts.difficulty_chart.line_color setting was renamed to pow_line_color
-The shared_pages.page_header.network_charts.difficulty_chart.fill_color setting was renamed to pow_fill_color
NOTE: If you have existing NetworkHistory data from before this update, it will be automatically assumed to be POW. If it was actualy POS, you will need to either manually fix the data in mongo or simply wait a couple hours while syncing to eventually push the old data out of the chart
-Hashrate chart is populated from get_hashrate
-Difficulty chart is populated from get_difficulty
-Added a networkhistories collection to hold the new network data
-Index sync and resync functions now check for and update network history data at the end of the sync process
-restore_backup.sh and delete_database.sh scripts now drop the new networkhistories collection
-Added a new javascript library chartjs-plugin-crosshair which adds crosshair functionality to the new chart.js line charts
-Added new settings to settings.json for controlling things like collecting network_history data, independently enabling/disabling the network charts and changing colors of various aspects of the charts
-Updated README to introduce the network charts and added a line for the chartjs-plugin-crosshair library
Joe Uhren