diff --git a/.appveyor.yml b/.appveyor.yml
index d21ce8b..622ad58 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,49 +1,85 @@
-# Windows Continuous Integration - using Nim-#devel
-
 version: '{build}'
 
 cache:
-- x86_64-4.9.2-release-win32-seh-rt_v4-rev4.7z
-- i686-4.9.2-release-win32-dwarf-rt_v4-rev4.7z
+- x86_64-4.9.2-release-win32-seh-rt_v4-rev4.7z -> .appveyor.yml
+- i686-4.9.2-release-win32-dwarf-rt_v4-rev4.7z -> .appveyor.yml
+- Nim -> .appveyor.yml
 
 matrix:
-  fast_finish: true
-  allow_failures:
-    - platform: x64
-    - platform: x86
+  # We always want 32 and 64-bit compilation
+  fast_finish: false
 
-environment:
-  matrix:
-    - MINGW_DIR: mingw64
-      MINGW_URL: https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/mingw-builds/4.9.2/threads-win32/seh/x86_64-4.9.2-release-win32-seh-rt_v4-rev4.7z/download
-      MINGW_ARCHIVE: x86_64-4.9.2-release-win32-seh-rt_v4-rev4.7z
-      platform: x64
-    - MINGW_DIR: mingw32
-      MINGW_URL: https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win32/Personal%20Builds/mingw-builds/4.9.2/threads-win32/dwarf/i686-4.9.2-release-win32-dwarf-rt_v4-rev4.7z/download
-      MINGW_ARCHIVE: i686-4.9.2-release-win32-dwarf-rt_v4-rev4.7z
-      platform: x86
+platform:
+  - x86
+  - x64
 
 install:
   - setlocal EnableExtensions EnableDelayedExpansion
-  - IF not exist "%MINGW_ARCHIVE%" appveyor DownloadFile "%MINGW_URL%" -FileName "%MINGW_ARCHIVE%"
-  - 7z x -y "%MINGW_ARCHIVE%" > nul
+
+  - IF "%PLATFORM%" == "x86" (
+      SET "MINGW_ARCHIVE=i686-4.9.2-release-win32-dwarf-rt_v4-rev4.7z" &
+      SET "MINGW_URL=https://sourceforge.net/projects/mingw-w64/files/Toolchains%%20targetting%%20Win32/Personal%%20Builds/mingw-builds/4.9.2/threads-win32/dwarf/i686-4.9.2-release-win32-dwarf-rt_v4-rev4.7z" &
+      SET "MINGW_DIR=mingw32"
+    ) ELSE (
+      IF "%PLATFORM%" == "x64" (
+        SET "MINGW_ARCHIVE=x86_64-4.9.2-release-win32-seh-rt_v4-rev4.7z" &
+        SET "MINGW_URL=https://sourceforge.net/projects/mingw-w64/files/Toolchains%%20targetting%%20Win64/Personal%%20Builds/mingw-builds/4.9.2/threads-win32/seh/x86_64-4.9.2-release-win32-seh-rt_v4-rev4.7z" &
+        SET "MINGW_DIR=mingw64"
+      ) else (
+        echo "Unknown platform"
+      )
+    )
+
   - SET PATH=%CD%\%MINGW_DIR%\bin;%CD%\Nim\bin;%PATH%
-  - git clone https://github.com/nim-lang/Nim.git
-  - cd %CD%\Nim
-  - git remote add statusim https://github.com/status-im/Nim.git
-  - git fetch statusim
-  - git config --global user.email "you@example.com"
-  - git config --global user.name "Your Name"
-  - for /f "tokens=*" %%G IN ('git branch -a --list ^"statusim/status-autopatch-*^"') DO (git merge %%G)
-  - git clone --depth 1 https://github.com/nim-lang/csources
-  - cd csources
-  - IF "%PLATFORM%" == "x64" ( build64.bat ) else ( build.bat )
-  - cd ..
-  - bin\nim c koch
-  - koch boot -d:release
-  - koch nimble
+
+  # Unpack mingw
+  - IF NOT EXIST "%MINGW_ARCHIVE%" appveyor DownloadFile "%MINGW_URL%" -FileName "%MINGW_ARCHIVE%"
+  - 7z x -y "%MINGW_ARCHIVE%" > nul
+
+    # build nim from our own branch - this to avoid the day-to-day churn and
+    # regressions of the fast-paced Nim development while maintaining the
+    # flexibility to apply patches
+  - SET "NEED_REBUILD="
+
+  - IF NOT EXIST "Nim\\.git\\" (
+      git clone https://github.com/status-im/Nim.git
+    ) ELSE (
+      ( cd Nim ) &
+      ( git pull ) &
+      ( cd .. )
+    )
+
+  # Rebuild Nim if HEAD has moved or if we don't yet have a cached version
+  - IF NOT EXIST "Nim\\ver.txt" (
+      SET NEED_REBUILD=1
+    ) ELSE (
+      ( CD Nim ) &
+      ( git rev-parse HEAD > ..\\cur_ver.txt ) &
+      ( fc ver.txt ..\\cur_ver.txt > nul ) &
+      ( IF NOT ERRORLEVEL == 0 SET NEED_REBUILD=1 ) &
+      ( cd .. )
+    )
+
+  - IF NOT EXIST "Nim\\bin\\nim.exe" SET NEED_REBUILD=1
+  - IF NOT EXIST "Nim\\bin\\nimble.exe" SET NEED_REBUILD=1
+
+  # after building nim, wipe csources to save on cache space
+  - IF DEFINED NEED_REBUILD (
+      cd Nim &
+      ( IF EXIST "csources" rmdir /s /q csources ) &
+      git clone --depth 1 https://github.com/nim-lang/csources &
+      cd csources &
+      ( IF "%PLATFORM%" == "x64" ( build64.bat ) else ( build.bat ) ) &
+      cd .. &
+      bin\nim c koch &
+      koch boot -d:release &
+      koch nimble &
+      git rev-parse HEAD > ver.txt &
+      rmdir /s /q csources
+    )
+
 build_script:
-  - cd C:\projects\nim-ttmath\
+  - cd C:\projects\%APPVEYOR_PROJECT_SLUG%
   - nimble install -y
 test_script:
   - nimble test
diff --git a/.travis.yml b/.travis.yml
index 6e9f328..8e56f7e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,9 @@ language: c # or other C/C++ variants
 sudo: false
 
 # https://docs.travis-ci.com/user/caching/
+#
+# Caching the whole nim folder is better than relying on ccache - this way, we
+# skip the expensive bootstrap process and linking
 cache:
   directories:
     - nim
@@ -12,11 +15,25 @@ os:
   - osx
 
 install:
-  # build nim from our own branch, to avoid downtime due to nim regressions
+  # build nim from our own branch - this to avoid the day-to-day churn and
+  # regressions of the fast-paced Nim development while maintaining the
+  # flexibility to apply patches
+  #
+  # check version of remote branch
   - "export NIMVER=$(git ls-remote https://github.com/status-im/nim.git HEAD | cut -f 1)"
-  - "{ [ -f nim/$NIMVER/bin/nim ] && [ -f nim/$NIMVER/bin/nimble ] ; } || { rm -rf nim ; mkdir -p nim; git clone https://github.com/status-im/nim.git nim/$NIMVER; cd nim/$NIMVER; sh build_all.sh; cd ../.. ; }"
+
+  # after building nim, wipe csources to save on cache space
+  - "{ [ -f nim/$NIMVER/bin/nim ] && [ -f nim/$NIMVER/bin/nimble ] ; } ||
+      { rm -rf nim ;
+        mkdir -p nim ;
+        git clone --depth=1 https://github.com/status-im/nim.git nim/$NIMVER ;
+        cd nim/$NIMVER ;
+        sh build_all.sh ;
+        rm -rf csources ;
+        cd ../.. ;
+      }"
   - "export PATH=$PWD/nim/$NIMVER/bin:$PATH"
 
 script:
-  - nimble install -dy && nimble test
-
+  - nimble install -y
+  - nimble test
diff --git a/LICENSE b/LICENSE-APACHEv2
similarity index 100%
rename from LICENSE
rename to LICENSE-APACHEv2
diff --git a/LICENSE-MIT b/LICENSE-MIT
new file mode 100644
index 0000000..8766e65
--- /dev/null
+++ b/LICENSE-MIT
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2018 Status Research & Development GmbH
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
index 8d9ea59..652dfc8 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,17 @@
 # nim-ttmath
 
-[![Build Status (Travis)](https://img.shields.io/travis/status-im/nim-ttmath/master.svg?label=Linux%20/%20macOS "Linux/macOS build status (Travis)")](https://travis-ci.org/status-im/nim-ttmath)
-[![Windows build status (Appveyor)](https://img.shields.io/appveyor/ci/jarradh/nim-ttmath/master.svg?label=Windows "Windows build status (Appveyor)")](https://ci.appveyor.com/project/jarradh/nim-ttmath)![Stability: experimental](https://img.shields.io/badge/stability-experimental-orange.svg)
+[![Build Status (Travis)](https://img.shields.io/travis/status-im/nimbus/master.svg?label=Linux%20/%20macOS "Linux/macOS build status (Travis)")](https://travis-ci.org/status-im/nimbus)
+[![Windows build status (Appveyor)](https://img.shields.io/appveyor/ci/nimbus/nimbus/master.svg?label=Windows "Windows build status (Appveyor)")](https://ci.appveyor.com/project/nimbus/nimbus)
+[![License: Apache](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
+[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/licenses/MIT)
+![Stability: experimental](https://img.shields.io/badge/stability-experimental-orange.svg)
 
 A Nim wrapper for [ttmath library](https://www.ttmath.org/), a c++ template library for operating with
 big integers and floats with fixed sizes.
 
+## License
+
+Licensed under both of the following:
+
+ * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license: [LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT