moved some of the category methods into BTC-prefixed functions
wip on script execution
Add podspec
Specify branch in podspec, during testing
Add LICENSE
Include OpenSSL
Specify ARC requirement in podspec
more opcodes implemented
Made BTCBigNumber immutable, added BTCMutableBigNumber. Now we have clear sseparation of functionality and type checker is our saviour.
readme update
more ops in script
added hash ops to scripts, moved category methods for NSData in a separate optional file.
note on OP_CODESEPARATOR
note
wip on OP_CHECKSIG
wip on checksig
doc fix
finished with ops; now need only a signature hash
wip on signature verification
more documentation on edge cases