* Improve file reading for beempy sign and broadcast
* add option to write file for beempy sign

This reverts commit b86e513f.

* Improve file reading for beempy sign and broadcast
* add option to write file for beempy sign

Scheduled weekly dependency update for week 52

add missing prefix to comment_options op

fix beempy verify --use-api

fixes #137

Update installation.rst

connect for beempy createwallet

The shared `Steem` instance does not connect by default.`beempy createwallet` raised a `beemapi.exceptions.RPCConnection: RPC is not connected!`. `wallet.keyStorage.getPublicKeys(prefix=self.steem.prefix)` tries and fails to lookup the network prefix in the unconnected state.

* testnet tests disabled
* Increase version number

Exclude sbd_interest_rate, as it is not present on the VIT blockchain

Scheduled weekly dependency update for week 47

testnet/3rd-party compatibility

Change recovery account / list recovery account change requests

Account: support for retrieving all delegations

Switching `Account.get_vesting_delegations()` from the
`find_vesting_delegations` API call, which is limited to only the first
1000 entries, to `list_vesting_delegations`. The latter supports
`start_account` and `limit` also for appbase nodes and allows fetching
all delegations of a given account.

* restructuring `sbd_to_rshares` to avoid redundant function calls and
streamline the calculations

replacing hard-coded asset symbols with the generic symbol names.

prefix is checked in getPublicKeys