[更改] marathon_sd: use auth_token and auth_token_file for token-based authentication instead of bearer_token and bearer_token_file respectively.
[更改] Metric names for HTTP server metrics changed
[特性] Add query commands to promtool
[特性] Add security headers to HTTP server responses
[特性] Pass query hints via remote read API
[特性] Basic auth passwords can now be configured via file across all configuration
[改进] Optimise PromQL and API serialization for memory usage and allocations
[改进] Limit number of dropped targets in web UI
[改进] Consul and EC2 service discovery allow using server-side filtering for performance improvement
[改进] Add advanced filtering configuration to EC2 service discovery
[改进] marathon_sd: adds support for basic and bearer authentication, plus all other common HTTP client options (TLS config, proxy URL, etc.)
[改进] Provide machine type metadata and labels in GCE service discovery
[改进] Add pod controller kind and name to Kubernetes service discovery data
[改进] Move TSDB to flock-based log file that works with Docker containers
[修复] Properly propagate storage errors in PromQL
[修复] Fix path prefix for web pages
[修复] Fix goroutine leak in Consul service discovery
[修复] Fix races in scrape manager
[修复] Fix OOM for very large k in PromQL topk() queries
[修复] Make remote write more resilient to unavailable receivers
[修复] Make remote write shutdown cleanly
[修复] Don't leak files on errors in TSDB's tombstone cleanup
[修复] Unary minus expressions now removes the metric name from results
[修复] Fix bug that lead to wrong amount of samples considered for time range expressions
