add currency conversion method

Reviewers: luis

Reviewed By: luis

Subscribers: ben

Differential Revision: https://phabricator.bitgo.com/D5952

add source to all v2 backup keys

Reviewers: barath

Reviewed By: barath

Subscribers: ben

Differential Revision: https://phabricator.bitgo.com/D5881

declare rootExtKey var to prevent undefined var errors

Summary: received a report from wirex that they can't send via web client to due a "rootExtKey is not defined" error. Doubt this will fix it, but good practice nonetheless.

Reviewers: arik, alex

Reviewed By: alex

Subscribers: ben

Differential Revision: https://phabricator.bitgo.com/D5845

SDK changes to make sdk pending approval work

Reviewers: arik, benchan

Reviewed By: benchan

Subscribers: ben

Differential Revision: https://phabricator.bitgo.com/D5840

remove sdk max fee checks

Summary:
we can fail this on the server side.
sdk side checks are much harder to debug.
alternatively we can reinstate it once we have a bypass flag to allow korbit to pass that in

Reviewers: arik, ben, alex, jameson, robert

Reviewed By: robert

Subscribers: ben

Differential Revision: https://phabricator.bitgo.com/D5844

add v2 verifyaddress route to bitgo-express

Summary: added this route at Bitstamp's request

Reviewers: benchan, arik

Reviewed By: arik

Subscribers: ben

Differential Revision: https://phabricator.bitgo.com/D5726

add alternative script hash support for litecoin

Reviewers: benchan, alex, ben

Reviewed By: alex

Subscribers: ben

Differential Revision: https://phabricator.bitgo.com/D5708

fix the litecoin network version

Reviewers: alex, benchan

Reviewed By: benchan

Subscribers: ben

Differential Revision: https://phabricator.bitgo.com/D5704

bump express to patch vulnerabilities reported on snyk

Summary: fix some DoS vulnerabilities in the old Express version

Reviewers: arik, benchan, alex

Reviewed By: alex

Subscribers: ben

Differential Revision: https://phabricator.bitgo.com/D5637

up sdk version to 3.3.1

Summary: Requiring ring fencing

Reviewers: arik

Reviewed By: arik

Subscribers: ben

Differential Revision: https://phabricator.bitgo.com/D5603