`get_account_reputations` called with the `first` parameter set
was skipping the first result also for the first request in the
loop, effectively missing one result.

- only skip the first result for follow-up requests
- add test case for `get_account_reputations()`
- replace `steem_instance` with `blockchain_instance`
- add test case for `get_account_count()`

- blochchain.stream(max_batch_size=50, only_virtual_ops=True) was skipping
the last block per batch, requesting the 2nd to last twice per call.
- Refactored that code part to remove some duplicate code.
- actually use the appbase call when appbase is supported

* Add option to use a derived WIF from coldcard hardware wallet to derive a new account password
* beempy passwordgen and beempy importaccount have now a new option import-coldcard
* beempy passwordgen handles now password generation and import, whereas beempy keygen handles BIP39 related key generation.
* refactoring and better unit testing

* Implement _get_operation_filter and use filter operations in history and history_reverse on the https://api.hive.blog api node

* Adapt account history on api changes and fixes issue #267
* Speed up history call, when limit is below 1000
* Improve unit tests for account history

* Fixed a bug when using skip_account_check=True
* Refactor code in Account
* Add more unit tests

* Add option add_tor to config storage, which allows it to use beempy in tails
* Remove Events requirements, beem.notify and beemapi.websocket, as it is not well tested and there are no websocket api nodes available on hive
* Remove unnecessary requirements (pylibscrypt and future)

Fix for #263

* New SupportedByHivemind exception has been added