v0.3.0

DiffFusion v0.3.0

Diff since v0.2.0

Merged pull requests:

• Add Caplet and Floorlet pricing (#41) (@sschlenkrich)
• Add Swaption pricing (#43) (@sschlenkrich)
• Add rates model calibration to European swaption vols (#44) (@sschlenkrich)
• Add Bermudan swaption pricing (#46) (@sschlenkrich)
• Add Bermudan vs European test case for Expected Exposure (#47) (@sschlenkrich)
• Update documentation for new methods (#48) (@sschlenkrich)
• Amend path handling for Examples module (#49) (@sschlenkrich)