composer: add cli argument parser
add download intent generator
add "Downloads" column to episodes table
add note on how to add sortability
generator: add generation by post id
refactor: move downloads code into separate file
refactor: move search extension into separate file
refactor: move feed discovery into separate file
add highcharts.js
add analytics page

- first chart: 30 days of downloads, top 3 episodes compared to the rest
remove highcharts.js
merge
first dc.js prototype
analytics: show downloads list table
compress analytics data
analytics data: display single episode data
render episode performance using dc.js
Support for Podlove Subscribe Button
analytics grouping by hours
etag support for `analytics_downloads_per_hour`