v0.1.3

Added

• (channel) add action to channel server callback
• (withdraw) add k1 to withdraw server callback
• (channel) add client/server and a test for withdraw (lud02)
• (withdraw) add client/server and a test for withdraw (lud03)

Fixed

• change bitor for logical one (typo)

Other

• cover serializations with unit tests
• remove nedless clone on urls serialization
• add re-exports top level for ease of use
• rename, reorganize, simplify, evolve
• rename withdrawal to withdraw (so confusing)