Fix usage summary
Added base unit 'bits'.
Update tests and fix URI parsing

Update URI parsing for BIP0072 compatability
Update tests for parse_URI
Shouldn't redo URI encoding
Merge pull request #747 from wozz/URI_tests

Update tests and fix URI parsing
Merge pull request #743 from pooler/usagefix

Fix usage summary
Merge pull request #746 from slush0/bits

Base unit 'bits'
fix #745
try pyasn1-modules as well
fix #744
add support for RSA_SHA256
fix: abort signing thread if wallet is watching only
better integration of plugins in installwizard (for 2fa, trezor plugins)
fix: get_action should call get_master_public_key
fix #750
wizard: ask for password earlier during restore
Rewrite accounts and transactions: store pubkeys instead of addresses in order to avoid unnecessary derivations.
add_keypairs: simplification
rm duplicate method getpubkey
get_master_public_key: always return xpub of main account