add deadlines to ScriptInputs in the client package.
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
add scaffolding for sector updates
include deadline in signature and DefaultScript
Merge pull request #201 from lukechampine/reorg

Include deadline in SignScriptInput
add sector update event to codebase
finish sector update events
move known scripts to be associated with wallets
switch script memory to being wallet-relevant
write testing for script event synchronization
Merge pull request #202 from DavidVorick/el

Update Scaffolding, Script Events moved to wallets and added to synchronization