* Introduced ConditionalScriptPubKey
Some more progress
Added Conditional signing infrastracture, tests do not pass and there are no Conditional tests
Fixed tests!
* Redid calcLockTime and calcSequenceForInputs in TxBuilder (added Conditional support)
* Added ScriptGenerators for Conditional scripts, only one test to go!
* Fixed CLTV(Empty) tests
* Responded to code review
* responded to code review
* ScriptSignature only types Policy-compliant script signatures
* Fixed md doc
* Replace scriptPubKeyToSatisfy with spendingInfoToSatisfy and made UTXOSpendingInfo ADT nicer
Tightened up types on Signer with a type parameter
Factored out common functionality in Signer
Responded to code review
* More review
* Refactored Signer interface to use TxSigComponent and UTXOSpendingInfo
Fixed all the broken things
Replaced TxSigComponent with unsigned Transaction in Signer interface to remove illegal states
* Added p2sh throw case in Signer
* Created P2WSHSigner and removed P2WSHWitnessSPKV0 case from P2PK and P2PKH signers
* Moved P2WSH MultiSig from MultiSigSigner to P2WSHSigner
* Cleaned up P2WSH case of BitcoinTxBuilder.signAndAddInput to exclusively use P2WSHSigner
* Replaced Option[(TxSigComponent, ScriptPubKey)] with an ADT
* Added signing with overrides to super Signer class to simplify delegation code
* Added Scaladocs for OverridesForNestedSigning ADT
* Made naming better for OverridesForNestedSigning ADT and added scaladocs
* Update script_tests.json, fix bugs that were unveiled with that update. Specifically around handling negative zero in Script, and cleanstack behavior for segwit scripts. We were not checking for equality at the byte level for negative zero. With cleanstack, we were failing the script, but not failing with the correct error. If you look at interpreter.cpp in bitcoin core, cleanstack check is done before checking if the stacktop is true or false
* Address code review
* Make ChainApi to scan the block filters in order to find matches
* performance improvements, unit test
* some parallelization
* addressed comments
* parallelism level
* fix parallelism computation
* Scala 2.11 compatibility
* increased test coverage
* cleanup
* more checks and cleanup
* change ChainApi.getMatchingBlocks signature
* some more changes
* Tightened up types, only allowing ExecutionInProgressScriptPrograms to be executed in Script OPs and having output type that cannot be PreExecutionScriptProgram
* Fixed all tests!
* Replaced all calls to loop and loopOrComplete with a single one at the bottom to retain the tailrec property
* Added a couple docs
* Removed all IntelliJ warnings and did some very minor and contained cleanup
* Refactored ScriptInterpreter.run into nicer pieces
* Replaced all calls to isInstanceOf with matches
