Bump to v0.0.21

0.20.0

0.0.19

0.0.18

Merge pull request #121 from alephium/testnet-add-alephium

Add Alephium to testnet token list

0.0.16

Merge pull request #69 from alephium/v0.0.15

Update version to `0.0.15`

0.0.14

Update version to 0.0.13

Merge pull request #48 from alephium/update-version-v0.0.12

Update Version to 0.0.12