Bucket generators

• linear buckets generator
• exponential buckets generator

The Third

• Pushgateway support
• Text format escaping

The Second

• Benchmarks
• Hunchentoot exposer gzip compression
• Locks cleanup
• Optimize no-labels case
• Fixes and improvements

Very first one

• prometheus lib
• text format
• hunchentoot exposer
• process info collector
• sbcl info collector