Log Message:
Changes 1.10.6:

Bugfixes:
* Fixed ClearableFileInput’s “Clear” checkbox on model form \ 
fields where the model field has a default.
* Fixed RequestDataTooBig and TooManyFieldsSent exceptions crashing rather than \ 
generating a bad request response.
* Fixed a crash on Oracle and PostgreSQL when subtracting DurationField or \ 
IntegerField from DateField.
* Fixed query expression date subtraction accuracy on PostgreSQL for differences \ 
larger than a month.
* Fixed a GDALException raised by GDALClose on GDAL ≥ 2.0.