diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 4b59af8..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,461 +0,0 @@
-# environment variables
-env:
-  global:
-    - CFLAGS=-Werror
-    - MAKEFLAGS=-j
-
-# cache installation dirs
-cache:
-  pip: true
-  directories:
-    - $HOME/.cache/apt
-
-# common installation
-_: &install-common
-  # need toml, also pip3 isn't installed by default?
-  - sudo apt-get install python3 python3-pip
-  - sudo pip3 install toml
-  # setup a ram-backed disk to speed up reentrant tests
-  - mkdir disks
-  - sudo mount -t tmpfs -o size=100m tmpfs disks
-  - export TFLAGS="$TFLAGS --disk=disks/disk"
-
-# test cases
-_: &test-example
-  # make sure example can at least compile
-  - sed -n '/``` c/,/```/{/```/d; p}' README.md > test.c &&
-    make all CFLAGS+="
-        -Duser_provided_block_device_read=NULL
-        -Duser_provided_block_device_prog=NULL
-        -Duser_provided_block_device_erase=NULL
-        -Duser_provided_block_device_sync=NULL
-        -include stdio.h"
-# default tests
-_: &test-default
-  # normal+reentrant tests
-  - make test TFLAGS+="-nrk"
-# common real-life geometries
-_: &test-nor
-  # NOR flash: read/prog = 1 block = 4KiB
-  - make test TFLAGS+="-nrk -DLFS_READ_SIZE=1 -DLFS_BLOCK_SIZE=4096"
-_: &test-emmc
-  # eMMC: read/prog = 512 block = 512
-  - make test TFLAGS+="-nrk -DLFS_READ_SIZE=512 -DLFS_BLOCK_SIZE=512"
-_: &test-nand
-  # NAND flash: read/prog = 4KiB block = 32KiB
-  - make test TFLAGS+="-nrk -DLFS_READ_SIZE=4096 -DLFS_BLOCK_SIZE=\(32*1024\)"
-# other extreme geometries that are useful for testing various corner cases
-_: &test-no-intrinsics
-  - make test TFLAGS+="-nrk -DLFS_NO_INTRINSICS"
-_: &test-no-inline
-  - make test TFLAGS+="-nrk -DLFS_INLINE_MAX=0"
-_: &test-byte-writes
-  - make test TFLAGS+="-nrk -DLFS_READ_SIZE=1 -DLFS_CACHE_SIZE=1"
-_: &test-block-cycles
-  - make test TFLAGS+="-nrk -DLFS_BLOCK_CYCLES=1"
-_: &test-odd-block-count
-  - make test TFLAGS+="-nrk -DLFS_BLOCK_COUNT=1023 -DLFS_LOOKAHEAD_SIZE=256"
-_: &test-odd-block-size
-  - make test TFLAGS+="-nrk -DLFS_READ_SIZE=11 -DLFS_BLOCK_SIZE=704"
-
-# report size 
-_: &report-size
-  # compile and find the code size with the smallest configuration
-  - make -j1 clean size
-        OBJ="$(ls lfs*.c | sed 's/\.c/\.o/' | tr '\n' ' ')"
-        CFLAGS+="-DLFS_NO_ASSERT -DLFS_NO_DEBUG -DLFS_NO_WARN -DLFS_NO_ERROR"
-        | tee sizes
-  # update status if we succeeded, compare with master if possible
-  - |
-    if [ "$TRAVIS_TEST_RESULT" -eq 0 ]
-    then
-        CURR=$(tail -n1 sizes | awk '{print $1}')
-        PREV=$(curl -u "$GEKY_BOT_STATUSES" https://api.github.com/repos/$TRAVIS_REPO_SLUG/status/master \
-            | jq -re "select(.sha != \"$TRAVIS_COMMIT\")
-                | .statuses[] | select(.context == \"${TRAVIS_BUILD_STAGE_NAME,,}/$NAME\").description
-                | capture(\"code size is (?<size>[0-9]+)\").size" \
-            || echo 0)
-  
-        STATUS="Passed, code size is ${CURR}B"
-        if [ "$PREV" -ne 0 ]
-        then
-            STATUS="$STATUS ($(python -c "print '%+.2f' % (100*($CURR-$PREV)/$PREV.0)")%)"
-        fi
-    fi
-
-# stage control
-stages:
-  - name: test
-  - name: deploy
-    if: branch = master AND type = push
-
-# job control
-jobs:
-  # native testing
-  - &x86
-    stage: test
-    env:
-      - NAME=littlefs-x86
-    install: *install-common
-    script: [*test-example, *report-size]
-  - {<<: *x86, script: [*test-default,          *report-size]}
-  - {<<: *x86, script: [*test-nor,              *report-size]}
-  - {<<: *x86, script: [*test-emmc,             *report-size]}
-  - {<<: *x86, script: [*test-nand,             *report-size]}
-  - {<<: *x86, script: [*test-no-intrinsics,    *report-size]}
-  - {<<: *x86, script: [*test-no-inline,        *report-size]}
-  - {<<: *x86, script: [*test-byte-writes,      *report-size]}
-  - {<<: *x86, script: [*test-block-cycles,     *report-size]}
-  - {<<: *x86, script: [*test-odd-block-count,  *report-size]}
-  - {<<: *x86, script: [*test-odd-block-size,   *report-size]}
-
-  # cross-compile with ARM (thumb mode)
-  - &arm
-    stage: test
-    env:
-      - NAME=littlefs-arm
-      - CC="arm-linux-gnueabi-gcc --static -mthumb"
-      - TFLAGS="$TFLAGS --exec=qemu-arm"
-    install:
-      - *install-common
-      - sudo apt-get install
-            gcc-arm-linux-gnueabi
-            libc6-dev-armel-cross
-            qemu-user
-      - arm-linux-gnueabi-gcc --version
-      - qemu-arm -version
-    script: [*test-example, *report-size]
-  - {<<: *arm, script: [*test-default,          *report-size]}
-  - {<<: *arm, script: [*test-nor,              *report-size]}
-  - {<<: *arm, script: [*test-emmc,             *report-size]}
-  - {<<: *arm, script: [*test-nand,             *report-size]}
-  - {<<: *arm, script: [*test-no-intrinsics,    *report-size]}
-  - {<<: *arm, script: [*test-no-inline,        *report-size]}
-  # it just takes way to long to run byte-level writes in qemu,
-  # note this is still tested in the native tests
-  #- {<<: *arm, script: [*test-byte-writes,      *report-size]}
-  - {<<: *arm, script: [*test-block-cycles,     *report-size]}
-  - {<<: *arm, script: [*test-odd-block-count,  *report-size]}
-  - {<<: *arm, script: [*test-odd-block-size,   *report-size]}
-
-  # cross-compile with MIPS
-  - &mips
-    stage: test
-    env:
-      - NAME=littlefs-mips
-      - CC="mips-linux-gnu-gcc --static"
-      - TFLAGS="$TFLAGS --exec=qemu-mips"
-    install:
-      - *install-common
-      - sudo apt-get install
-            gcc-mips-linux-gnu
-            libc6-dev-mips-cross
-            qemu-user
-      - mips-linux-gnu-gcc --version
-      - qemu-mips -version
-    script: [*test-example, *report-size]
-  - {<<: *mips, script: [*test-default,          *report-size]}
-  - {<<: *mips, script: [*test-nor,              *report-size]}
-  - {<<: *mips, script: [*test-emmc,             *report-size]}
-  - {<<: *mips, script: [*test-nand,             *report-size]}
-  - {<<: *mips, script: [*test-no-intrinsics,    *report-size]}
-  - {<<: *mips, script: [*test-no-inline,        *report-size]}
-  # it just takes way to long to run byte-level writes in qemu,
-  # note this is still tested in the native tests
-  #- {<<: *mips, script: [*test-byte-writes,      *report-size]}
-  - {<<: *mips, script: [*test-block-cycles,     *report-size]}
-  - {<<: *mips, script: [*test-odd-block-count,  *report-size]}
-  - {<<: *mips, script: [*test-odd-block-size,   *report-size]}
-
-  # cross-compile with PowerPC
-  - &powerpc
-    stage: test
-    env:
-      - NAME=littlefs-powerpc
-      - CC="powerpc-linux-gnu-gcc --static"
-      - TFLAGS="$TFLAGS --exec=qemu-ppc"
-    install:
-      - *install-common
-      - sudo apt-get install
-            gcc-powerpc-linux-gnu
-            libc6-dev-powerpc-cross
-            qemu-user
-      - powerpc-linux-gnu-gcc --version
-      - qemu-ppc -version
-    script: [*test-example, *report-size]
-  - {<<: *powerpc, script: [*test-default,          *report-size]}
-  - {<<: *powerpc, script: [*test-nor,              *report-size]}
-  - {<<: *powerpc, script: [*test-emmc,             *report-size]}
-  - {<<: *powerpc, script: [*test-nand,             *report-size]}
-  - {<<: *powerpc, script: [*test-no-intrinsics,    *report-size]}
-  - {<<: *powerpc, script: [*test-no-inline,        *report-size]}
-  # it just takes way to long to run byte-level writes in qemu,
-  # note this is still tested in the native tests
-  #- {<<: *powerpc, script: [*test-byte-writes,      *report-size]}
-  - {<<: *powerpc, script: [*test-block-cycles,     *report-size]}
-  - {<<: *powerpc, script: [*test-odd-block-count,  *report-size]}
-  - {<<: *powerpc, script: [*test-odd-block-size,   *report-size]}
-
-  # test under valgrind, checking for memory errors
-  - &valgrind
-    stage: test
-    env:
-      - NAME=littlefs-valgrind
-    install:
-      - *install-common
-      - sudo apt-get install valgrind
-      - valgrind --version
-    script:
-      - make test TFLAGS+="-k --valgrind"
-
-  # test compilation in read-only mode
-  - stage: test
-    env:
-      - NAME=littlefs-readonly
-      - CC="arm-linux-gnueabi-gcc --static -mthumb"
-      - CFLAGS="-Werror -DLFS_READONLY"
-    if: branch !~ -prefix$
-    install:
-      - *install-common
-      - sudo apt-get install
-            gcc-arm-linux-gnueabi
-            libc6-dev-armel-cross
-      - arm-linux-gnueabi-gcc --version
-    # report-size will compile littlefs and report the size
-    script: [*report-size]
-
-  # test compilation in thread-safe mode
-  - stage: test
-    env:
-      - NAME=littlefs-threadsafe
-      - CC="arm-linux-gnueabi-gcc --static -mthumb"
-      - CFLAGS="-Werror -DLFS_THREADSAFE"
-    if: branch !~ -prefix$
-    install:
-      - *install-common
-      - sudo apt-get install
-            gcc-arm-linux-gnueabi
-            libc6-dev-armel-cross
-      - arm-linux-gnueabi-gcc --version
-    # report-size will compile littlefs and report the size
-    script: [*report-size]
-
-  # self-host with littlefs-fuse for fuzz test
-  - stage: test
-    env:
-      - NAME=littlefs-fuse
-    if: branch !~ -prefix$
-    install:
-      - *install-common
-      - sudo apt-get install libfuse-dev
-      - git clone --depth 1 https://github.com/geky/littlefs-fuse -b v2
-      - fusermount -V
-      - gcc --version
-
-      # setup disk for littlefs-fuse
-      - rm -rf littlefs-fuse/littlefs/*
-      - cp -r $(git ls-tree --name-only HEAD) littlefs-fuse/littlefs
-
-      - mkdir mount
-      - sudo chmod a+rw /dev/loop0
-      - dd if=/dev/zero bs=512 count=128K of=disk
-      - losetup /dev/loop0 disk
-    script:
-      # self-host test
-      - make -C littlefs-fuse
-
-      - littlefs-fuse/lfs --format /dev/loop0
-      - littlefs-fuse/lfs /dev/loop0 mount
-
-      - ls mount
-      - mkdir mount/littlefs
-      - cp -r $(git ls-tree --name-only HEAD) mount/littlefs
-      - cd mount/littlefs
-      - stat .
-      - ls -flh
-      - make -B test
-
-  # test migration using littlefs-fuse
-  - stage: test
-    env:
-      - NAME=littlefs-migration
-    if: branch !~ -prefix$
-    install:
-      - *install-common
-      - sudo apt-get install libfuse-dev
-      - git clone --depth 1 https://github.com/geky/littlefs-fuse -b v2 v2
-      - git clone --depth 1 https://github.com/geky/littlefs-fuse -b v1 v1
-      - fusermount -V
-      - gcc --version
-
-      # setup disk for littlefs-fuse
-      - rm -rf v2/littlefs/*
-      - cp -r $(git ls-tree --name-only HEAD) v2/littlefs
-
-      - mkdir mount
-      - sudo chmod a+rw /dev/loop0
-      - dd if=/dev/zero bs=512 count=128K of=disk
-      - losetup /dev/loop0 disk
-    script:
-      # compile v1 and v2
-      - make -C v1
-      - make -C v2
-
-      # run self-host test with v1
-      - v1/lfs --format /dev/loop0
-      - v1/lfs /dev/loop0 mount
-
-      - ls mount
-      - mkdir mount/littlefs
-      - cp -r $(git ls-tree --name-only HEAD) mount/littlefs
-      - cd mount/littlefs
-      - stat .
-      - ls -flh
-      - make -B test
-
-      # attempt to migrate
-      - cd ../..
-      - fusermount -u mount
-
-      - v2/lfs --migrate /dev/loop0
-      - v2/lfs /dev/loop0 mount
-
-      # run self-host test with v2 right where we left off
-      - ls mount
-      - cd mount/littlefs
-      - stat .
-      - ls -flh
-      - make -B test
-
-  # automatically create releases
-  - stage: deploy
-    env:
-      - NAME=deploy
-    script:
-      - |
-        bash << 'SCRIPT'
-        set -ev
-        # Find version defined in lfs.h
-        LFS_VERSION=$(grep -ox '#define LFS_VERSION .*' lfs.h | cut -d ' ' -f3)
-        LFS_VERSION_MAJOR=$((0xffff & ($LFS_VERSION >> 16)))
-        LFS_VERSION_MINOR=$((0xffff & ($LFS_VERSION >>  0)))
-        # Grab latests patch from repo tags, default to 0, needs finagling
-        # to get past github's pagination api
-        PREV_URL=https://api.github.com/repos/$TRAVIS_REPO_SLUG/git/refs/tags/v$LFS_VERSION_MAJOR.$LFS_VERSION_MINOR.
-        PREV_URL=$(curl -u "$GEKY_BOT_RELEASES" "$PREV_URL" -I \
-            | sed -n '/^Link/{s/.*<\(.*\)>; rel="last"/\1/;p;q0};$q1' \
-            || echo $PREV_URL)
-        LFS_VERSION_PATCH=$(curl -u "$GEKY_BOT_RELEASES" "$PREV_URL" \
-            | jq 'map(.ref | match("\\bv.*\\..*\\.(.*)$";"g")
-                .captures[].string | tonumber) | max + 1' \
-            || echo 0)
-        # We have our new version
-        LFS_VERSION="v$LFS_VERSION_MAJOR.$LFS_VERSION_MINOR.$LFS_VERSION_PATCH"
-        echo "VERSION $LFS_VERSION"
-        # Check that we're the most recent commit
-        CURRENT_COMMIT=$(curl -f -u "$GEKY_BOT_RELEASES" \
-            https://api.github.com/repos/$TRAVIS_REPO_SLUG/commits/master \
-            | jq -re '.sha')
-        [ "$TRAVIS_COMMIT" == "$CURRENT_COMMIT" ] || exit 0
-        # Create major branch
-        git branch v$LFS_VERSION_MAJOR HEAD
-        # Create major prefix branch
-        git config user.name "geky bot"
-        git config user.email "bot@geky.net"
-        git fetch https://github.com/$TRAVIS_REPO_SLUG.git \
-            --depth=50 v$LFS_VERSION_MAJOR-prefix || true
-        ./scripts/prefix.py lfs$LFS_VERSION_MAJOR
-        git branch v$LFS_VERSION_MAJOR-prefix $( \
-            git commit-tree $(git write-tree) \
-                $(git rev-parse --verify -q FETCH_HEAD | sed -e 's/^/-p /') \
-                -p HEAD \
-                -m "Generated v$LFS_VERSION_MAJOR prefixes")
-        git reset --hard
-        # Update major version branches (vN and vN-prefix)
-        git push --atomic https://$GEKY_BOT_RELEASES@github.com/$TRAVIS_REPO_SLUG.git \
-            v$LFS_VERSION_MAJOR \
-            v$LFS_VERSION_MAJOR-prefix
-        # Build release notes
-        PREV=$(git tag --sort=-v:refname -l "v*" | head -1)
-        if [ ! -z "$PREV" ]
-        then
-            echo "PREV $PREV"
-            CHANGES=$(git log --oneline $PREV.. --grep='^Merge' --invert-grep)
-            printf "CHANGES\n%s\n\n" "$CHANGES"
-        fi
-        case ${GEKY_BOT_DRAFT:-minor} in
-            true)  DRAFT=true ;;
-            minor) DRAFT=$(jq -R 'endswith(".0")' <<< "$LFS_VERSION") ;;
-            false) DRAFT=false ;;
-        esac
-        # Create the release and patch version tag (vN.N.N)
-        curl -f -u "$GEKY_BOT_RELEASES" -X POST \
-            https://api.github.com/repos/$TRAVIS_REPO_SLUG/releases \
-            -d "{
-                \"tag_name\": \"$LFS_VERSION\",
-                \"name\": \"${LFS_VERSION%.0}\",
-                \"target_commitish\": \"$TRAVIS_COMMIT\",
-                \"draft\": $DRAFT,
-                \"body\": $(jq -sR '.' <<< "$CHANGES")
-            }" #"
-        SCRIPT
-
-# manage statuses
-before_install:
-  - |
-    # don't clobber other (not us) failures
-    if ! curl https://api.github.com/repos/$TRAVIS_REPO_SLUG/status/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
-        | jq -e ".statuses[] | select(
-            .context == \"${TRAVIS_BUILD_STAGE_NAME,,}/$NAME\" and
-            .state == \"failure\" and
-            (.target_url | endswith(\"$TRAVIS_JOB_NUMBER\") | not))"
-    then
-        curl -u "$GEKY_BOT_STATUSES" -X POST \
-            https://api.github.com/repos/$TRAVIS_REPO_SLUG/statuses/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
-            -d "{
-                \"context\": \"${TRAVIS_BUILD_STAGE_NAME,,}/$NAME\",
-                \"state\": \"pending\",
-                \"description\": \"${STATUS:-In progress}\",
-                \"target_url\": \"$TRAVIS_JOB_WEB_URL#$TRAVIS_JOB_NUMBER\"
-            }"
-    fi
-
-after_failure:
-  - |
-    # don't clobber other (not us) failures
-    if ! curl https://api.github.com/repos/$TRAVIS_REPO_SLUG/status/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
-        | jq -e ".statuses[] | select(
-            .context == \"${TRAVIS_BUILD_STAGE_NAME,,}/$NAME\" and
-            .state == \"failure\" and
-            (.target_url | endswith(\"$TRAVIS_JOB_NUMBER\") | not))"
-    then
-        curl -u "$GEKY_BOT_STATUSES" -X POST \
-            https://api.github.com/repos/$TRAVIS_REPO_SLUG/statuses/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
-            -d "{
-                \"context\": \"${TRAVIS_BUILD_STAGE_NAME,,}/$NAME\",
-                \"state\": \"failure\",
-                \"description\": \"${STATUS:-Failed}\",
-                \"target_url\": \"$TRAVIS_JOB_WEB_URL#$TRAVIS_JOB_NUMBER\"
-            }"
-    fi
-
-after_success:
-  - |
-    # don't clobber other (not us) failures
-    # only update if we were last job to mark in progress,
-    # this isn't perfect but is probably good enough
-    if ! curl https://api.github.com/repos/$TRAVIS_REPO_SLUG/status/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
-        | jq -e ".statuses[] | select(
-            .context == \"${TRAVIS_BUILD_STAGE_NAME,,}/$NAME\" and
-            (.state == \"failure\" or .state == \"pending\") and
-            (.target_url | endswith(\"$TRAVIS_JOB_NUMBER\") | not))"
-    then
-        curl -u "$GEKY_BOT_STATUSES" -X POST \
-            https://api.github.com/repos/$TRAVIS_REPO_SLUG/statuses/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
-            -d "{
-                \"context\": \"${TRAVIS_BUILD_STAGE_NAME,,}/$NAME\",
-                \"state\": \"success\",
-                \"description\": \"${STATUS:-Passed}\",
-                \"target_url\": \"$TRAVIS_JOB_WEB_URL#$TRAVIS_JOB_NUMBER\"
-            }"
-    fi