0.4.0

0.4.0 Release with following features and fixes (compared to 0.3.0):
-Add a GUI available by default at http://127.0.0.1:8888
-Add the --validate-sha256-getowrk-shares option to check the share validity of getwork miners before submitting to a pool. If share is not valid, it is not submitted. Only works for sha256 based pool.
-Fix a bug on the timer task management (may lead to some odd behaviors)
-Add some missing headers to Getwork responses
-Add isEnabled pool configuration property in configuration file.
-Fix an exception with --help option
-Fix an Exception on pool reconnection
-Fix the timer tasks cancel (general stability)
-Fix getwork job no more updated after a while. Several Getwork connections where created when getwork requests are received in burst.
-Add --conf-file (-f) option on command line to use a configuration file (sample files available in the package).
-Send a reply on worker subscribe extranonce request (Stratum).
-Improve error management on getwork connections.
-Fix some pool reconnection problem (an issue is still openned).
-Add a NeoDatis database to store hashrate history for users and pools.
-Update dependencies versions.
-Add midstate and hash1 in getwork resposne for old SHA256 miners.
-Fix a bug when shutdown is requested.

GUI example: