Log Message:
Update to 0.4.1

Upstream changes:
0.4.1 Version 2014-11-22

    Add new app sequence, you can use it to create sequence value.
    Fix generic version parameter passing to obj.save() bug, only when version \ 
is not False will be passed
    Improve nginx and supervisor config content for deployment
    Fix multi expose expose('/') and expose('') for the same URL bug
    Add strict_slashes=False to Map instance.
    Add Reference() with reference_class is None, it can replace SelfReference
    Add ManyToMany() with reference_class is None, it can implements self \ 
manytomany relationship.
    Fix ManyToMany() with through model references to the same model bug
    Add #{appname} support in settings.ini
    Add support for head.js
    Fix template try bug

0.4 Version 2014-9-17

    Refactor template with tornado
    Fix Pickle default value process bug, will not convert empty value to ''
    Add staticize command
    Resume DEBUG_TEMPLATE option for template
    Fix count implement when there is group_by, limit, join, it'll use select \ 
count(*) from (select * from table)
    Add debug parameter for tracing i18n language
    ORM add duplication support, so you can set it in CONNECTIONS options, it'll \ 
make definition of Model engine simple
    Add set_session() function to orm
    Add fieldname parameter to Property, and fix column mapping process between \ 
property and table field
    Add -z paramter to load and loadtable command, thanks for linuxr
    Fix uliweb load for csv format bug, thanks for taogeT
    Fix tmp/templates_temp creation