v0.7.6

API updates for Siles.

This release enhances the use of the implicit siles in sisl with a more stringent file name.

• Added sdata script which parses the arguments based on the input file. This is preliminary work and will still change
• Added XSF file format
• Added bands file from siesta to easily plot band structures using python
• Many bug-fixes for the IO of geometry read/write in rarely used file formats
• Speeded up the Hamiltonian creation
• Added code-coverage tests (mainly for developing reasons)