up version to 0.1.21

...to make sure compiled bundle is absolutely the latest.
fix .fromScriptPubKey parsing in some strange Txs
fix buffer
fix isMultiSig
reverse changes in address
change log in checkStatus to .debug
add more strict checking, plus tests
Merge pull request #355 from matiu/bug/peermanager-log

change log in checkStatus to .debug
rm console.log
Merge pull request #351 from matiu/bug/minor-bug-in-address-FromScript

fix .fromScriptPubKey parsing in some strange Txs
Fix to check for zero s value in sign function

If r OR s are zero then recalculate both r and s until they are both non-zero values.
Change Address.forKey() to Address.fromKey()
Merge pull request #361 from dthorpe/VanityAddress

Change Address.forKey() to Address.fromKey()
add ECIES support in node - not browser
use SJCL AES to get ECIES working in the browser
check if seed is greater than 512 bits
fix bad test, bytes!=bits
Merge pull request #366 from gabegattis/bug/BIP32SeedLength

Bug/bip32 seed length
replace jssha with sjcl - remove jssha dependency
remove underscore dependency to decrease bundle size