增加Excel xlsx格式导出数据，可以支持大数据量导出
Merge pull request #134 from marshalys/master

Use Excel xlsx format export data，support large data export.
add xlsxwriter info to README
add xlsxwriter info to README
add xlsxwriter info to README
Merge pull request #135 from marshalys/master

add xlsxwriter info to README
Fixed when changing a field using BatchAction wasn't allowed when the value validated to False, even when the field allows it, e.g. BooleanField couldn't be set to False
Merge pull request #136 from jneight/batch-fix

Assign False to a BooleanField isn't allowed when using a BatchChangeAction
Update fa icons version
Update javascript files to compact fa icons new version
Update fontawesome to 4.0.3
Merge branch 'master' of github.com:sshwsfc/django-xadmin
Update version to 4.0.4
Fix inline icon bug
Export icons fix
Added MultiSelectFieldListFilter
Merge pull request #139 from frmdstryr/master

Added MultiSelectFieldListFilter
Fixed clicking checkbox not applying filter
Merge pull request #140 from frmdstryr/master

Fixed clicking checkbox not applying filter
Fixed #146 Font-awesome version 4.0.3 compatibility problem