Merge pull request #140 from sunyc/master

Changes for 3.0 alpha7.2
Merge pull request #141 from sunyc/master

Changes for 3.0 alpha 7.3
Merge pull request #143 from sunyc/master

More changes for alpha7.3
Merge pull request #144 from sunyc/master

More changes for alpha7.3
Merge pull request #145 from sunyc/master

Fix a error message in edit source
Merge pull request #146 from sunyc/master

Fixes for alpha7.3
Adding changelog for fluffos-3.0-alpha7.3
support the RANDOMIZED_RESETS option
Merge pull request #149 from pkuxkxjason/next-3.0

support the RANDOMIZED_RESETS option
Bump version to 3.0-alpha7.4
Improves log message in logon process.
Adding a TODO.
Adding a safe_error routine.
source formatting.
Integerate callout into event loop.
Correction for postgresql include path.

Fix #150.