Use pyexcel 0.2.0 api

No harm to get this out

New feature: set file name in response

as in #2

Maintenance release

fix #1 where latest api of pyexcel (>v0.1.5, <v0.1.8)

Support for pyramid-excel and pyexcel-text

• pass on 'auto_commit' option for pyexcel
• support pyexcel-text mime types

Make response from a database query set

• new function: make_response_from_query_sets

Uniting the request and repsonse interfaces that uses pyexcel

• Provides a general interface for handle file upload
• A general interface for making file downloads