Release 0.2.3

• add new tests & fix api 0.2 regression (44c9837)

Release 0.2.2

• campaign object signature helper functions + extend example script (9a376b7)

Release 0.2.1

• coverage new API + move issue to campaign object (b9d0bd4)

Release 0.2.0

• husky upgrade (5fea971)
• new API interface (bd375ee)
• add docs link to README (b0eec3f)

Release 0.1.9

• upgrade deps (6128513)
• refactor sendTransaction$ (94d95ea)
• fix sendSignedTransaction Web3 1.0.0-beta.51 (2b7501d)