2 versions (manifest v2 for firefox, manifest v3 for chrome)
support new operation types for Hive chain

* adds additional polyfills for keychains

* improved backup/restore functionality with the option to preserve notification settings

* updated hive keychain polyfill to use more reliable endpoint

* updated to handle latest blurt api changes
* added bitshares-based USCoin
* chain dropdown changed select box due to regression bug in latest versions of chrome engine

* removes requirement for a "special character" in password, as it may lead to more issues for international users
* fixes post method for keychain polyfills
* update to latest whale-lib

* updated whale-lib adds support for Hive HF24

* allows for auto-decryption of steem memos using posting or memo key
* updated to latest whale-lib
* updated hive default rpc endpoint

* added keychain methods for memo encode/decode
* updated to latest whale-lib, along with a few other minor tweaks

* added keychain methods for memo encode/decode
* updated to latest whale-lib, along with a few other minor tweaks

* cleaner format for keyset extraction from "Add Account" page
* updated whale-lib corrects issue that was causing some hive chain transactions to fail

* additional tweaks and fixes to smooth account auto-loading process for new users

* fixed display error in dialog popup when adding new keys to WhaleVault via javascript

* updates for blurt HF2
* updates eos/blurt endpoints
* added keychain methods for greater compatibility with apps such as peakd

* minor regression update in whale library
* minor doc updates

* updated serialization of static_variant for steem chains to use op_name instead of id, which was still causing problems with blurt chain
* improved chain error parsing for keychain proxies

* updates blurt transaction primitives

* alternate RPC for keychain polyfill can now be set via `*_keychain.alt_rpc`
* corrected blurt chain_id

* updated api endpoint for blurt_keychain polyfill

* polyfill for Blurt Keychain
* minor cosmetic adjustments

* added chain support for hive and blurt

* some minor changes to better comply with firefox's latest add-on requirements

* added polyfill support for Hive Keychain

WhaleVault can now be used to login and sign transactions directly on both Steem and Hive, along with their respective wallets, as well as for Steem-Engine and Hive-Engine!

(also fixed oversight in popup.html with 0.1.27 associated with removal of *-min.js library)

* added chain support for hive and blurt

* some minor changes to better comply with firefox's latest add-on requirements

* added polyfill support for Hive Keychain

WhaleVault can now be used to login and sign transactions directly on both Steem and Hive, along with their respective wallets, as well as for Steem-Engine and Hive-Engine!