* [DEV-134] Implement Continuous Integration
Squashed commit:
[5e41d830] Dev 223 fix txindex (#100)
* [DEV-201] In handleGetBlockDAGInfo calculate difficulty by the tip with the lowest bits
* [DEV-202] Move VirtualBlock.GetUTXOEntry to BlockDAG
* [DEV-203] Move VirtualBlock.SelectedTip() to BlockDAG
* [DEV-203] Move VirtualBlock.SelectedTip() to BlockDAG
* [DEV-204] Unexport VirtualBlock() and add CalcMedianTime method for DAG
* [DEV-204] add explanation about difficulty in CurrentBits() comment
* [DEV-204] unexport VirtualBlock type
* [DEV-223] make applyUTXOChanges return pastUTXOResults
* [DEV-223] add bluestxdata for current block as well
* [DEV-223] re-design tx index
* [DEV-223] edit txindex comments
* [DEV-223] rename BluesTxData -> AcceptedTxData, and return from applyUTXOChanges only transactions that got accepted
* [DEV-223] add unit test for txindex
* [DEV-223] fix comments and unite blueTransaction and AcceptedTxData to one type
* [DEV-223] use bucket cursor for dbFetchFirstTxRegion
* [DEV-223] use the same cursor instance for dbFetchFirstTxRegion
* [DEV-223] write in dbFetchFirstTxRegion's comment that it returns the first block region
* [DEV-223] rename type BlueBlockTransaction to TxWithBlockHash
* [DEV-223] add named returned value for applyUTXOChanges
[4c95e293] [DEV-134] Made golint ignore the vendor directory.
[21736dbc] [DEV-134] Renamed ExampleBlockChain_ProcessBlock to ExampleBlockDAG_ProcessBlock to satisfy go vet.
[beea6486] [DEV-134] Removed pushing the built docker to a remove repository. That's unnecessary at this stage.
[bee911ed] [DEV-134] Made all precompilation checks run on everything instead of only the root dir.
[585f92ae] [DEV-134] Added "github.com/pkg/errors" to dep.
[5f02f570] [DEV-134] -vendor-only is written with only one hyphen.
[3eee7f95] [DEV-134] go vet instead of go tool vet.
[0c2d4343] [DEV-134] Split all the pre-compile checks to separate lines to be able to tell which of them is failing.
[780519c8] [DEV-134] Ran gofmt on everything.
[8247146b] Dev 223 fix txindex (#100)
* [DEV-201] In handleGetBlockDAGInfo calculate difficulty by the tip with the lowest bits
* [DEV-202] Move VirtualBlock.GetUTXOEntry to BlockDAG
* [DEV-203] Move VirtualBlock.SelectedTip() to BlockDAG
* [DEV-203] Move VirtualBlock.SelectedTip() to BlockDAG
* [DEV-204] Unexport VirtualBlock() and add CalcMedianTime method for DAG
* [DEV-204] add explanation about difficulty in CurrentBits() comment
* [DEV-204] unexport VirtualBlock type
* [DEV-223] make applyUTXOChanges return pastUTXOResults
* [DEV-223] add bluestxdata for current block as well
* [DEV-223] re-design tx index
* [DEV-223] edit txindex comments
* [DEV-223] rename BluesTxData -> AcceptedTxData, and return from applyUTXOChanges only transactions that got accepted
* [DEV-223] add unit test for txindex
* [DEV-223] fix comments and unite blueTransaction and AcceptedTxData to one type
* [DEV-223] use bucket cursor for dbFetchFirstTxRegion
* [DEV-223] use the same cursor instance for dbFetchFirstTxRegion
* [DEV-223] write in dbFetchFirstTxRegion's comment that it returns the first block region
* [DEV-223] rename type BlueBlockTransaction to TxWithBlockHash
* [DEV-223] add named returned value for applyUTXOChanges
[bff68aa3] [DEV-134] Gave executable permission to deploy.sh
[638a99d9] [DEV-134] Added jenkinsfile and deploy script.
* [DEV-134] Added a robust testing script.
* [DEV-134] Fixed a bash-ism.
* [DEV-134] Disabled testing with coverage for now.
* [DEV-134] Disabled golint and removed removing debug symbols.
* [DEV-134] Disabled aligncheck.
* [DEV-134] Disabled structcheck and varcheck.
* [DEV-134] Added "don't inline functions" to compiler flags for testing.
* [DEV-134] Made build fail if gofmt prints out anything.
* [DEV-134] Fixed misleading comment.
* [DEV-134] Added comments to test.sh.
* [DEV-134] Renamed tm to measure_runtime and removed do_ prefixes from functions.
* [DEV-134] Fixed gofmt line in build script.
* [DEV-134] Fixed gofmt some more.
* [DEV-134] Fixed gofmt not actually failing due to logical or.
* [DEV-97] Moved github.com/daglabs/btcutil into github.com/daglabs/btcd/btcutil.
* [DEV-97] Updated Gopkg.toml to no longer refer to btcutil.
* [DEV-97] Renamed btcutil to util.
* [DEV-18] changed CSV/CLTV to be regular op codes, and returned nop2 and nop3 to be regular nops
* [DEV-18] remove csv/cltv flags - part 1
* [DEV-18] remove csv/cltv flags - part 2
* [DEV-18] remove csv/cltv activation rules
* [DEV-18] remove csv/cltv activation rules
* [DEV-18] csv_fork_test fixes
* [DEV-18] readd chain params
* [DEV-18] readd chain params and remove csv activation rules
* [DEV-18] returned build flags to integration test
* [DEV-18] make csv/cltv to pop the the first element of the stack instead of peeking it
* [DEV-18] fix comments related to CSV/CLTV to remove any reference to soft fork
* [DEV-18] fix comments related to CSV/CLTV to remove any reference to soft fork
* [DEV-18] rename csv_fork_test.go to csv_fork.go
* [DEV-18] change mTx location
* [DEV-18] remove BIP0065Height
* [DEV-18] add function isUpgradableNop for readability
