Remove GB from EU (commerceguys#80)

IE - VAT update 2020/2021 (commerceguys#79)

DE - VAT update for 2020 (commerceguys#78)

Missing imports for documentation and editorconfig (commerceguys#70)

* Missing imports for documentation and editorconfig

* Updated editorconfig

Irish VAT change on Jan 1st 2019. Fixes commerceguys#66.

Add Indonesian sales tax (commerceguys#40)

Merge pull request commerceguys#32 from dariuszz123/master

Fixed Latvia and Lithuania zone files

Update address usage for commerceguys/addressing v0.8

Rename add() to addResolver() and getAll() to getResolvers() in the c…

…hain resolvers, for clarity.

Add the Greek and Portuguese islands to the (non-used) eu_vat zone.