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diff --git a/‎.github/CONTRIBUTING.md
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diff --git a/‎.github/no-response.yml
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diff --git a/‎.travis.yml
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diff --git a/‎Makefile
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diff --git a/‎README.md
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@@ -1,12 +1,13 @@
 # Lines starting with '#' are comments.
 # Each line is a file pattern followed by one or more owners.
 
-accounts/usbwallet @karalabe
-consensus          @karalabe
-core/              @karalabe @holiman
-eth/               @karalabe
-les/               @zsfelfoldi
-light/             @zsfelfoldi
-mobile/            @karalabe
-p2p/               @fjl @zsfelfoldi
-whisper/           @gballet @gluk256
+accounts/usbwallet              @karalabe
+accounts/abi                    @gballet
+consensus                       @karalabe
+core/                           @karalabe @holiman
+eth/                            @karalabe
+les/                            @zsfelfoldi
+light/                          @zsfelfoldi
+mobile/                         @karalabe
+p2p/                            @fjl @zsfelfoldi
+whisper/                        @gballet @gluk256
@@ -1,16 +1,40 @@
+# Contributing
+
+Thank you for considering to help out with the source code! We welcome 
+contributions from anyone on the internet, and are grateful for even the 
+smallest of fixes!
+
+If you'd like to contribute to go-ethereum, please fork, fix, commit and send a 
+pull request for the maintainers to review and merge into the main code base. If
+you wish to submit more complex changes though, please check up with the core 
+devs first on [our gitter channel](https://gitter.im/ethereum/go-ethereum) to 
+ensure those changes are in line with the general philosophy of the project 
+and/or get some early feedback which can make both your efforts much lighter as
+well as our review and merge procedures quick and simple.
+
+## Coding guidelines
+
+Please make sure your contributions adhere to our coding guidelines:
+
+ * Code must adhere to the official Go 
+[formatting](https://golang.org/doc/effective_go.html#formatting) guidelines 
+(i.e. uses [gofmt](https://golang.org/cmd/gofmt/)).
+ * Code must be documented adhering to the official Go 
+[commentary](https://golang.org/doc/effective_go.html#commentary) guidelines.
+ * Pull requests need to be based on and opened against the `master` branch.
+ * Commit messages should be prefixed with the package(s) they modify.
+   * E.g. "eth, rpc: make trace configs optional"
+
 ## Can I have feature X
 
-Before you do a feature request please check and make sure that it isn't possible
-through some other means. The JavaScript enabled console is a powerful feature
-in the right hands. Please check our [Wiki page](https://github.com/ethereum/go-ethereum/wiki) for more info
+Before you submit a feature request, please check and make sure that it isn't 
+possible through some other means. The JavaScript-enabled console is a powerful 
+feature in the right hands. Please check our 
+[Wiki page](https://github.com/ethereum/go-ethereum/wiki) for more info
 and help.
 
-## Contributing
-
-If you'd like to contribute to go-ethereum please fork, fix, commit and
-send a pull request. Commits which do not comply with the coding standards
-are ignored (use gofmt!).
+## Configuration, dependencies, and tests
 
-See [Developers' Guide](https://github.com/ethereum/go-ethereum/wiki/Developers'-Guide)
-for more details on configuring your environment, testing, and
-dependency management.
+Please see the [Developers' Guide](https://github.com/ethereum/go-ethereum/wiki/Developers'-Guide)
+for more details on configuring your environment, managing project dependencies
+and testing procedures.
@@ -1,11 +1,11 @@
 # Number of days of inactivity before an Issue is closed for lack of response
 daysUntilClose: 30
 # Label requiring a response
-responseRequiredLabel: more-information-needed
+responseRequiredLabel: "need:more-information"
 # Comment to post when closing an Issue for lack of response. Set to `false` to disable
 closeComment: >
   This issue has been automatically closed because there has been no response
   to our request for more information from the original author. With only the
   information that is currently in the issue, we don't have enough information
-  to take action. Please reach out if you have or find the answers we need so
-  that we can investigate further.
+  to take action. Please reach out if you have more relevant information or
+  answers to our questions so that we can investigate further.
@@ -7,7 +7,7 @@ exemptLabels:
   - pinned
   - security
 # Label to use when marking an issue as stale
-staleLabel: stale
+staleLabel: "status:inactive"
 # Comment to post when marking an issue as stale. Set to `false` to disable
 markComment: >
   This issue has been automatically marked as stale because it has not had
 
@@ -4,21 +4,21 @@ sudo: false
 matrix:
   include:
     - os: linux
-      dist: trusty
+      dist: xenial
       sudo: required
-      go: 1.9.x
+      go: 1.10.x
       script:
-        - sudo modprobe fuse
-        - sudo chmod 666 /dev/fuse
-        - sudo chown root:$USER /etc/fuse.conf
-        - go run build/ci.go install
-        - go run build/ci.go test -coverage $TEST_PACKAGES
+      - sudo modprobe fuse
+      - sudo chmod 666 /dev/fuse
+      - sudo chown root:$USER /etc/fuse.conf
+      - go run build/ci.go install
+      - go run build/ci.go test -coverage $TEST_PACKAGES
 
     # These are the latest Go versions.
     - os: linux
-      dist: trusty
+      dist: xenial
       sudo: required
-      go: 1.10.x
+      go: 1.11.x
       script:
         - sudo modprobe fuse
         - sudo chmod 666 /dev/fuse
@@ -27,18 +27,24 @@ matrix:
         - go run build/ci.go test -coverage $TEST_PACKAGES
 
     - os: osx
-      go: 1.10.x
+      go: 1.11.x
       script:
+        - echo "Increase the maximum number of open file descriptors on macOS"
+        - NOFILE=20480
+        - sudo sysctl -w kern.maxfiles=$NOFILE
+        - sudo sysctl -w kern.maxfilesperproc=$NOFILE
+        - sudo launchctl limit maxfiles $NOFILE $NOFILE
+        - sudo launchctl limit maxfiles
+        - ulimit -S -n $NOFILE
+        - ulimit -n
         - unset -f cd # workaround for https://github.com/travis-ci/travis-ci/issues/8703
-        - brew update
-        - brew cask install osxfuse
         - go run build/ci.go install
         - go run build/ci.go test -coverage $TEST_PACKAGES
 
     # This builder only tests code linters on latest version of Go
     - os: linux
-      dist: trusty
-      go: 1.10.x
+      dist: xenial
+      go: 1.11.x
       env:
         - lint
       git:
@@ -47,9 +53,10 @@ matrix:
         - go run build/ci.go lint
 
     # This builder does the Ubuntu PPA upload
-    - os: linux
-      dist: trusty
-      go: 1.10.x
+    - if: type = push
+      os: linux
+      dist: xenial
+      go: 1.11.x
       env:
         - ubuntu-ppa
       git:
@@ -61,14 +68,18 @@ matrix:
             - debhelper
             - dput
             - fakeroot
+            - python-bzrlib
+            - python-paramiko
       script:
-        - go run build/ci.go debsrc -signer "Go Ethereum Linux Builder <[email protected]>" -upload ppa:ethereum/ethereum
+        - echo '|1|7SiYPr9xl3uctzovOTj4gMwAC1M=|t6ReES75Bo/PxlOPJ6/GsGbTrM0= ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA0aKz5UTUndYgIGG7dQBV+HaeuEZJ2xPHo2DS2iSKvUL4xNMSAY4UguNW+pX56nAQmZKIZZ8MaEvSj6zMEDiq6HFfn5JcTlM80UwlnyKe8B8p7Nk06PPQLrnmQt5fh0HmEcZx+JU9TZsfCHPnX7MNz4ELfZE6cFsclClrKim3BHUIGq//t93DllB+h4O9LHjEUsQ1Sr63irDLSutkLJD6RXchjROXkNirlcNVHH/jwLWR5RcYilNX7S5bIkK8NlWPjsn/8Ua5O7I9/YoE97PpO6i73DTGLh5H9JN/SITwCKBkgSDWUt61uPK3Y11Gty7o2lWsBjhBUm2Y38CBsoGmBw==' >> ~/.ssh/known_hosts
+        - go run build/ci.go debsrc -upload ethereum/ethereum -sftp-user geth-ci -signer "Go Ethereum Linux Builder <[email protected]>"
 
     # This builder does the Linux Azure uploads
-    - os: linux
-      dist: trusty
+    - if: type = push
+      os: linux
+      dist: xenial
       sudo: required
-      go: 1.10.x
+      go: 1.11.x
       env:
         - azure-linux
       git:
@@ -98,11 +109,12 @@ matrix:
         - go run build/ci.go archive -arch arm64 -type tar -signer LINUX_SIGNING_KEY -upload gethstore/builds
 
     # This builder does the Linux Azure MIPS xgo uploads
-    - os: linux
-      dist: trusty
+    - if: type = push
+      os: linux
+      dist: xenial
       services:
         - docker
-      go: 1.10.x
+      go: 1.11.x
       env:
         - azure-linux-mips
       git:
@@ -125,8 +137,9 @@ matrix:
         - go run build/ci.go archive -arch mips64le -type tar -signer LINUX_SIGNING_KEY -upload gethstore/builds
 
     # This builder does the Android Maven and Azure uploads
-    - os: linux
-      dist: precise # Needed for the android tools
+    - if: type = push
+      os: linux
+      dist: xenial
       addons:
         apt:
           packages:
@@ -146,24 +159,25 @@ matrix:
       git:
         submodules: false # avoid cloning ethereum/tests
       before_install:
-        - curl https://storage.googleapis.com/golang/go1.10.1.linux-amd64.tar.gz | tar -xz
+        - curl https://storage.googleapis.com/golang/go1.11.5.linux-amd64.tar.gz | tar -xz
         - export PATH=`pwd`/go/bin:$PATH
         - export GOROOT=`pwd`/go
         - export GOPATH=$HOME/go
       script:
         # Build the Android archive and upload it to Maven Central and Azure
-        - curl https://dl.google.com/android/repository/android-ndk-r15c-linux-x86_64.zip -o android-ndk-r15c.zip
-        - unzip -q android-ndk-r15c.zip && rm android-ndk-r15c.zip
-        - mv android-ndk-r15c $HOME
-        - export ANDROID_NDK=$HOME/android-ndk-r15c
+        - curl https://dl.google.com/android/repository/android-ndk-r17b-linux-x86_64.zip -o android-ndk-r17b.zip
+        - unzip -q android-ndk-r17b.zip && rm android-ndk-r17b.zip
+        - mv android-ndk-r17b $HOME
+        - export ANDROID_NDK=$HOME/android-ndk-r17b
 
         - mkdir -p $GOPATH/src/github.com/ethereum
         - ln -s `pwd` $GOPATH/src/github.com/ethereum
         - go run build/ci.go aar -signer ANDROID_SIGNING_KEY -deploy https://oss.sonatype.org -upload gethstore/builds
 
     # This builder does the OSX Azure, iOS CocoaPods and iOS Azure uploads
-    - os: osx
-      go: 1.10.x
+    - if: type = push
+      os: osx
+      go: 1.11.x
       env:
         - azure-osx
         - azure-ios
@@ -190,19 +204,13 @@ matrix:
         - go run build/ci.go xcode -signer IOS_SIGNING_KEY -deploy trunk -upload gethstore/builds
 
     # This builder does the Azure archive purges to avoid accumulating junk
-    - os: linux
-      dist: trusty
-      go: 1.10.x
+    - if: type = cron
+      os: linux
+      dist: xenial
+      go: 1.11.x
       env:
         - azure-purge
       git:
         submodules: false # avoid cloning ethereum/tests
       script:
         - go run build/ci.go purge -store gethstore/builds -days 14
-
-notifications:
-  webhooks:
-    urls:
-      - https://webhooks.gitter.im/e/e09ccdce1048c5e03445
-    on_success: change
-    on_failure: always
 
@@ -171,3 +171,4 @@ xiekeyang <[email protected]>
 yoza <[email protected]>
 ΞTHΞЯSPHΞЯΞ <{viktor.tron,nagydani,zsfelfoldi}@gmail.com>
 Максим Чусовлянов <[email protected]>
+Ralph Caraveo <[email protected]>
@@ -1,5 +1,5 @@
 # Build Geth in a stock Go builder container
-FROM golang:1.10-alpine as builder
+FROM golang:1.11-alpine as builder
 
 RUN apk add --no-cache make gcc musl-dev linux-headers
 
 
@@ -1,5 +1,5 @@
 # Build Geth in a stock Go builder container
-FROM golang:1.10-alpine as builder
+FROM golang:1.11-alpine as builder
 
 RUN apk add --no-cache make gcc musl-dev linux-headers
 
 
@@ -41,6 +41,7 @@ lint: ## Run linters.
 	build/env.sh go run build/ci.go lint
 
 clean:
+	./build/clean_go_build_cache.sh
 	rm -fr build/_workspace/pkg/ $(GOBIN)/*
 
 # The devtools target installs tools required for 'go generate'.
@@ -56,6 +57,9 @@ devtools:
 	@type "solc" 2> /dev/null || echo 'Please install solc'
 	@type "protoc" 2> /dev/null || echo 'Please install protoc'
 
+swarm-devtools:
+	env GOBIN= go install ./cmd/swarm/mimegen
+
 # Cross Compilation Targets (xgo)
 
 geth-cross: geth-linux geth-darwin geth-windows geth-android geth-ios
 
@@ -7,7 +7,7 @@ https://camo.githubusercontent.com/915b7be44ada53c290eb157634330494ebe3e30a/6874
 )](https://godoc.org/github.com/ethereum/go-ethereum)
 [![Go Report Card](https://goreportcard.com/badge/github.com/ethereum/go-ethereum)](https://goreportcard.com/report/github.com/ethereum/go-ethereum)
 [![Travis](https://travis-ci.org/ethereum/go-ethereum.svg?branch=master)](https://travis-ci.org/ethereum/go-ethereum)
-[![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/ethereum/go-ethereum?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
+[![Discord](https://img.shields.io/badge/discord-join%20chat-blue.svg)](https://discord.gg/nthXNEv)
 
 Automated builds are available for stable releases and the unstable master branch.
 Binary archives are published at https://geth.ethereum.org/downloads/.
@@ -18,7 +18,7 @@ For prerequisites and detailed build instructions please read the
 [Installation Instructions](https://github.com/ethereum/go-ethereum/wiki/Building-Ethereum)
 on the wiki.
 
-Building geth requires both a Go (version 1.7 or later) and a C compiler.
+Building geth requires both a Go (version 1.9 or later) and a C compiler.
 You can install them using your favourite package manager.
 Once the dependencies are installed, run
 
@@ -34,13 +34,13 @@ The go-ethereum project comes with several wrappers/executables found in the `cm
 
 | Command    | Description |
 |:----------:|-------------|
-| **`geth`** | Our main Ethereum CLI client. It is the entry point into the Ethereum network (main-, test- or private net), capable of running as a full node (default) archive node (retaining all historical state) or a light node (retrieving data live). It can be used by other processes as a gateway into the Ethereum network via JSON RPC endpoints exposed on top of HTTP, WebSocket and/or IPC transports. `geth --help` and the [CLI Wiki page](https://github.com/ethereum/go-ethereum/wiki/Command-Line-Options) for command line options. |
+| **`geth`** | Our main Ethereum CLI client. It is the entry point into the Ethereum network (main-, test- or private net), capable of running as a full node (default), archive node (retaining all historical state) or a light node (retrieving data live). It can be used by other processes as a gateway into the Ethereum network via JSON RPC endpoints exposed on top of HTTP, WebSocket and/or IPC transports. `geth --help` and the [CLI Wiki page](https://github.com/ethereum/go-ethereum/wiki/Command-Line-Options) for command line options. |
 | `abigen` | Source code generator to convert Ethereum contract definitions into easy to use, compile-time type-safe Go packages. It operates on plain [Ethereum contract ABIs](https://github.com/ethereum/wiki/wiki/Ethereum-Contract-ABI) with expanded functionality if the contract bytecode is also available. However it also accepts Solidity source files, making development much more streamlined. Please see our [Native DApps](https://github.com/ethereum/go-ethereum/wiki/Native-DApps:-Go-bindings-to-Ethereum-contracts) wiki page for details. |
 | `bootnode` | Stripped down version of our Ethereum client implementation that only takes part in the network node discovery protocol, but does not run any of the higher level application protocols. It can be used as a lightweight bootstrap node to aid in finding peers in private networks. |
 | `evm` | Developer utility version of the EVM (Ethereum Virtual Machine) that is capable of running bytecode snippets within a configurable environment and execution mode. Its purpose is to allow isolated, fine-grained debugging of EVM opcodes (e.g. `evm --code 60ff60ff --debug`). |
 | `gethrpctest` | Developer utility tool to support our [ethereum/rpc-test](https://github.com/ethereum/rpc-tests) test suite which validates baseline conformity to the [Ethereum JSON RPC](https://github.com/ethereum/wiki/wiki/JSON-RPC) specs. Please see the [test suite's readme](https://github.com/ethereum/rpc-tests/blob/master/README.md) for details. |
 | `rlpdump` | Developer utility tool to convert binary RLP ([Recursive Length Prefix](https://github.com/ethereum/wiki/wiki/RLP)) dumps (data encoding used by the Ethereum protocol both network as well as consensus wise) to user friendlier hierarchical representation (e.g. `rlpdump --hex CE0183FFFFFFC4C304050583616263`). |
-| `swarm`    | swarm daemon and tools. This is the entrypoint for the swarm network. `swarm --help` for command line options and subcommands. See https://swarm-guide.readthedocs.io for swarm documentation. |
+| `swarm`    | Swarm daemon and tools. This is the entrypoint for the Swarm network. `swarm --help` for command line options and subcommands. See [Swarm README](https://github.com/ethereum/go-ethereum/tree/master/swarm) for more information. |
 | `puppeth`    | a CLI wizard that aids in creating a new Ethereum network. |
 
 ## Running geth
@@ -69,7 +69,7 @@ This command will:
  * Start up Geth's built-in interactive [JavaScript console](https://github.com/ethereum/go-ethereum/wiki/JavaScript-Console),
    (via the trailing `console` subcommand) through which you can invoke all official [`web3` methods](https://github.com/ethereum/wiki/wiki/JavaScript-API)
    as well as Geth's own [management APIs](https://github.com/ethereum/go-ethereum/wiki/Management-APIs).
-   This too is optional and if you leave it out you can always attach to an already running Geth instance
+   This tool is optional and if you leave it out you can always attach to an already running Geth instance
    with `geth attach`.
 
 ### Full node on the Ethereum test network
@@ -168,7 +168,7 @@ HTTP based JSON-RPC API options:
   * `--ipcpath` Filename for IPC socket/pipe within the datadir (explicit paths escape it)
 
 You'll need to use your own programming environments' capabilities (libraries, tools, etc) to connect
-via HTTP, WS or IPC to a Geth node configured with the above flags and you'll need to speak [JSON-RPC](http://www.jsonrpc.org/specification)
+via HTTP, WS or IPC to a Geth node configured with the above flags and you'll need to speak [JSON-RPC](https://www.jsonrpc.org/specification)
 on all transports. You can reuse the same connection for multiple requests!
 
 **Note: Please understand the security implications of opening up an HTTP/WS based transport before