separate sibling and state
framework added for script nonces
Merge branch 'master' into el
add deadlines to bootstrap process
move delta.ScriptInput to state.ScriptInput
Merge pull request #199 from DavidVorick/el

Prepare for non-malleable scripts
full script-event integration
bring back event list testing
add ordering testing to event list tests
finish event list integration and testing
Merge pull request #200 from DavidVorick/el

Event List Integration, Script Learning
add data_seek and test
use data_seek in scripts.go
make push() and pop() methods of scriptEnv
add op_concat and op_deadline
change internals of op_verify
include deadline in signature and DefaultScript
Merge pull request #201 from lukechampine/reorg

Include deadline in SignScriptInput