#v4.1.1911.0-rc - pom update (bitpay#54)

#v4.0.1911.0-rc - Invoice model updated (bitpay#53)

#v4.0.1910 - Improvements and new features (bitpay#52)

- Refunds refactored
- Model dynamics improved
- Invoice filtering extended
- ETH full support

#v3.2.1910.0-rc - Exception handling refactored (bitpay#51)

- Package refactor (bitpay#49)

#v3.0 - v3 architecture standard implemented (bitpay#47)

* - Init from conf file implemented

* - Version upgrade

* - Standard Client constructors implemented

* - Guide updated

* - Readme updated

* - Doc updated

* - Code cleanup

* - Code refactor

bitpay#2.4 - Version updated (bitpay#46)

#v2-1 - Dependency update (bitpay#35)

- Dependencies up to date

Merge pull request bitpay#22 from pieterpoorthuis/master

Fixed bitpay#20

Merge pull request bitpay#18 from kleetus/feature/dont-auth-invoice-e…

…ndpoint

Feature/dont auth invoice endpoint