v0.0.2

PseudostableRecurrences v0.0.2

Diff since v0.0.1

Merged pull requests:

• add BandedSylvesterRecurrence (#7) (@putianyi889)
• Change the definition of Product (#8) (@putianyi889)
• Version 0.0.2 (#11) (@putianyi889)

Closed issues:

• make return types clear (#9)
• Change definition of init, coef, etc. (#10)