Opcodes for tx inputs, outputs, and witnesses #172
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adlerjohn
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sezna
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May 14, 2021
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Fixes #22.
Add new opcodes to get the start address and length of transaction inputs, outputs, and witnesses. These aren't contract opcodes, so they can be accessed in predicates as well. All other fields should be gettable using compile-time-constant offsets from either the transaction start address or the start address from one of these opcodes.