Elevator

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* Remove: legacy setup_loggers function
* fix 123: exposing a database object
* ref 123: Renamed DatabasesHandler to DatabaseStore
* Fix: elevator benchmarks
* Fix: supervisor test should remove their tests files
* Add: tests for backend atm
* Add: backend supervisor tests + fixes
* update: enhance backend majordome management
* fix 125: backend does not instantiate it's own DatabasesHandler anymore
* Fix: elevator tests fakers now uses a clear files/dirs pattern
* Update: more obvious DatabaseHandler args names
* Add: benchmarks using hurdles and pyelevator
* update 120 : Auto re-mount unmounted database on new requests
* Fix : backend properly tears down workers
* fix 120, fix 91: Implement Majordom watcher thread
* Update 120: set databases last access marker
* Update 120: move ocd worker to backend module
* Update 121: implement last activity action on workers
* Update 121: Documented worker
* Update 121: Workers poll to reduce cpu usage + backend refactoring
* Update 121: use an internal message protocol between supervisor and workers
* Update: Moved the backend elements in their own module
* Fix 122: workers now set their processing state
* Refactor: moved loggers init in their own log module
* Update 121: fixed workers stop action
* Update 121: Added constants to normalize interaction with workers
* Add 121: basic workers supervisor implementation, implies a lot of refactoring
* Update: rename server poller
* Update: use ROUTER/DEALER terminology and rename workerpool and proxy to backend and frontend
* Update: renamed conf module to args

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* Fix : DatabaseStore last acess property
* Fix: init script creates pid file
* Fix: pyzmq version
* Fix: explicit daemon init failures

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* Add: restore theme
* Add : Base sphinx documentation
* Update : new License MIT
* Fix 86: IOError when bad config file supplied as cmdline argument
* Fix 95: Elevator will start and log errors even though some databases are corrupted
* Fix : log-level debug messages format
* Fix : travis, tests, requirements

0.3d / 2012-10-19
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* Add : Request error for invalid request messages
* Update 91: Mount default at server startup
* Update 91: Mount/Unmount command + auto-mount on connect
* Update 91: add a ticker class, which executes a function every x seconds
* Update 30, Update 99: Compress Responses on demande (request.meta['compression'])
* Update 88, Update 99: now responses comes in two parts header+content
* Update 88: Fix MGet, Range, Slice return values types to suite with new responses format
* Update 88: Refactored Request/Responses format
* Update : Refactored DatabasesHandler internal storage
* Update : Few refactoring on loggers handling
* Update : Refactored DBConnect no more db_uid to provide in request
* Fix 97: provide mono-letters args
* Fix 89: Log requests/responses on log-level=DEBUG
* Fix 87: Refactored logging
* Fix 100: Non blocking workers, graceful shutdown == PERFORMANCES
* Fix 98: Activity logging on both file and stdout
* Fix 101: fixed ipc handling
* Fix : api tests for compatibility with new Req/Resp
* Fix : refactored tests for new Range/Slice behavior when size == 1
* Fix : Mount/Unmount passed args

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* Fix: Refactor api tests
* Fix 119: Range and Slice now support include_key, and include_value params
* Remove: max cache management + Add: Lru cache and bloom filters

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* Add : Implement PING command
* Add : Cli module
* Add : Debian packaging files
* Update: Use plyvel leveldb backend
* Update: Use plyvel bloom filter in read operations
* Update: Add experimental command line doc
* Update: Set fabfile as a module
* Update: Documentation to fit with plyvel
* Update 114: Run MGet against db snapshot
* Update : working cmdline
* Fix 114: Enhance MGET perfs by acting on a min/max keys range slice
* Fix 113: handle MGET arguments in command line
* Many other little updates and fixes, see logs