diff --git a/developer/bin/irregular_cask_whitespace b/developer/bin/irregular_cask_whitespace
deleted file mode 100755
index 62a60ae737..0000000000
--- a/developer/bin/irregular_cask_whitespace
+++ /dev/null
@@ -1,133 +0,0 @@
-#!/bin/bash
-#
-# irregular_cask_whitespace
-#
-# find irregular whitespace in Cask files
-#
-# notes
-#
-#     requires a recent-ish Perl with Unicode support, probably 5.14
-#     or better.
-#
-# bugs
-#
-# todo
-#
-
-###
-### settings
-###
-
-set -e
-set -o pipefail
-set +o histexpand
-set -o nounset
-shopt -s nocasematch
-shopt -s nullglob
-
-###
-### functions
-###
-
-warn () {
-    local message="$@"
-    message="${message//\\t/$'\011'}"
-    message="${message//\\n/$'\012'}"
-    message="${message%"${message##*[![:space:]]}"}"
-    printf "%s\n" "$message" 1>&2
-}
-
-die () {
-    warn "$@"
-    exit 1
-}
-
-###
-### main
-###
-
-_irregular_cask_whitespace () {
-    local directory="$1"
-    cd "$directory" || die "Could not cd to '$directory'"
-
-    printf "# No trailing newline at EOF\n"
-    perl -C32 -0777 -ne 'print "    $ARGV\n" if m{[^\n]\z}s'      -- ./*.rb
-
-    printf "\n# Extra trailing newline at EOF\n"
-    perl -C32 -0777 -ne 'print "    $ARGV\n" if m{\n{2}\z}s'      -- ./*.rb
-
-    printf "\n# Final 'end' indented\n"
-    perl -C32 -0777 -ne 'print "    $ARGV\n" if m{ end\s+\z}s'    -- ./*.rb
-
-    printf "\n# Extra newline before final end\n"
-    perl -C32 -0777 -ne 'print "    $ARGV\n" if m{\n\nend\s+\z}s' -- ./*.rb
-
-    printf "\n# Extra newline before header\n"
-    perl -C32 -0777 -ne 'print "    $ARGV\n" if m{\n\ncask\s+:v\d\S*\s+=>}s' -- ./*.rb
-
-    printf "\n# Extra newline after header\n"
-    perl -C32 -0777 -ne 'print "    $ARGV\n" if m{(?:\A|\n)cask\s+:v\d\S*\s+=>[^\n]+\n\n\s*(\S+)}s and $1 ne "if"' -- ./*.rb
-
-    printf "\n# No empty line before uninstall\n"
-    perl -C32 -0777 -ne 'print "    $ARGV\n" if m{\n[^\n]+\n +uninstall }s'  -- ./*.rb
-
-    # todo?
-    # printf "\n# No empty line before caveats\n"
-    # perl -C32 -0777 -ne 'print "    $ARGV\n" if m{\n[^\n]+\n +caveats }s'    -- ./*.rb
-
-    printf "\n# Extra interior newlines\n"
-    perl -C32 -0777 -ne 'print "    $ARGV\n" if m{\n{3,}}s'    -- ./*.rb
-
-    printf "\n# Leading whitespace at BOF\n"
-    perl -C32 -0777 -ne 'print "    $ARGV\n" if m{\A\s}s'      -- ./*.rb
-
-    printf "\n# Trailing whitespace at EOL (includes Tab/CR)\n"
-    perl -C32       -ne 'print "    $ARGV\n" if m{\s\n}s'      -- ./*.rb | sort | uniq
-
-    printf "\n# Tabs\n"
-    perl -C32 -0777 -ne 'print "    $ARGV\n" if m{\t}s'        -- ./*.rb
-
-    printf "\n# Carriage Returns\n"
-    perl -C32 -0777 -ne 'print "    $ARGV\n" if m{\r}s'        -- ./*.rb
-
-    printf "\n# Misc Control Characters\n"
-    perl -C32 -0777 -ne 'print "    $ARGV\n" if m{[\x00-\x08\x0B-\x0C\x0E\x1F]}s'                -- ./*.rb
-
-    printf "\n# First indent not 2\n"
-    perl -C32 -0777 -ne 's{\A(.*?\n)?cask\s+[^\n]+\n+}{}s; print "    $ARGV\n" unless m{\A  \S}s'  -- ./*.rb
-
-    printf "\n# Indents not multiple of 2\n"
-    perl -C32 -0777 -ne 'print "    $ARGV\n" if m{\n(?:  ){0,} [a-z]}s'                          -- ./*.rb
-
-    printf "\n# Unicode Space Characters\n"
-    # \x{0085}\x{0088}\x{0089}
-    perl -C32 -0777 -ne 'print "    $ARGV\n" if m{[\x{008a}\x{00a0}\x{1680}\x{180e}\x{2000}\x{2001}\x{2002}\x{2003}\x{2004}\x{2005}\x{2006}\x{2007}\x{2008}\x{2009}\x{200a}\x{200b}\x{2028}\x{2029}\x{202f}\x{205f}\x{2060}\x{3000}\x{feff}\x{e0020}]}s' -- ./*.rb
-
-}
-
-###
-### argument processing
-###
-
-if [[ "${1:-}" =~ ^-+h(elp)?$ ]]; then
-   printf "irregular_cask_whitespace <dir>
-
-   Find irregular whitespace in Cask files within <dir>
-
-"
-    exit
-fi
-
-if [ "$#" -ne 1 ]; then
-    die "Single directory argument required"
-elif ! [ -d "$1" ]; then
-    die "No directory found at '$1'"
-fi
-
-###
-### dispatch
-###
-
-_irregular_cask_whitespace "${@:-}"
-
-#
diff --git a/developer/bin/project_stats b/developer/bin/project_stats
deleted file mode 100755
index 652b6d7b33..0000000000
--- a/developer/bin/project_stats
+++ /dev/null
@@ -1,234 +0,0 @@
-#!/bin/bash
-#
-# project_stats
-#
-# stats on project/release from git database
-#
-
-###
-### settings
-###
-
-set -e               # exit on any uncaught error
-set +o histexpand    # don't expand history expressions
-shopt -s nocasematch # case-insensitive regular expressions
-
-###
-### configurable global variables
-###
-
-# these paths relative to project root
-declare -a cask_paths=(Casks)
-declare -a code_paths=(bin developer lib spec test brew-cask.rb Rakefile Gemfile Gemfile.lock .travis.yml .gitignore)
-declare -a doc_paths=(doc LICENSE "*.md")
-end_object="HEAD"
-
-###
-### global variables
-###
-
-cask_authors=''
-
-# prefer GNU xargs
-xargs="$(/usr/bin/which gxargs || printf '/usr/bin/xargs')"
-
-###
-### functions
-###
-
-warn () {
-    local message="$@"
-    message="${message//\\t/$'\011'}"
-    message="${message//\\n/$'\012'}"
-    message="${message%"${message##*[![:space:]]}"}"
-    printf "%s\n" "$message" 1>&2
-}
-
-die () {
-    warn "$@"
-    exit 1
-}
-
-cd_to_project_root () {
-    local script_dir="$(/usr/bin/dirname "$0")"
-    cd "$script_dir"
-    local git_root="$(git rev-parse --show-toplevel)"
-    if [[ -z "$git_root" ]]; then
-        die "ERROR: Could not find git project root"
-    fi
-    cd "$git_root"
-}
-
-warn_if_off_branch () {
-    local wanted_branch='master'
-    if [[ -n "$1" ]]; then
-        wanted_branch="$1"
-    fi
-
-    local current_branch="$(git rev-parse --abbrev-ref HEAD)"
-    if ! [[ "$current_branch" = "$wanted_branch" ]]; then
-        warn "\nWARNING: you are running from branch '$current_branch', not '$wanted_branch'\n\n"
-    fi
-}
-
-verify_git_object () {
-    local object="$1"
-
-    if ! git rev-parse --verify "$object" -- >/dev/null 2>&1; then
-        die "\nERROR: No such commit object: '$object'\n\n"
-    fi
-}
-
-print_contributor_stats () {
-    local start_object="$1"
-    local initial_commit="$2"
-
-    printf "====================\n"
-    printf "Contributors\n"
-    printf "====================\n"
-
-    local -a git_log_cmd=("git" "log" "--no-merges" "--format='%ae'" "${start_object}..${end_object}")
-    printf "Unique contributors"
-    if ! [[ "$start_object" = "$initial_commit" ]]; then
-        printf " since %s" "${start_object#v}"
-    fi
-    printf "\n"
-    cask_authors="$("${git_log_cmd[@]}" -- "${cask_paths[@]}" | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l)"
-    printf "  Casks\t%s\n" "$cask_authors"
-    printf "  code\t"
-    "${git_log_cmd[@]}" -- "${code_paths[@]}" | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l
-    printf "  docs\t"
-    "${git_log_cmd[@]}" -- "${doc_paths[@]}"  | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l
-    printf "  any\t"
-    "${git_log_cmd[@]}" -- .                  | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l
-    if ! [[ "$start_object" = "$initial_commit" ]]; then
-        local alltime_contribs="$(git log --no-merges --format='%ae' "${initial_commit}".."${end_object}" -- . | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l)"
-        local prior_contribs="$(git log --no-merges --format='%ae' "${initial_commit}".."${start_object}" -- . | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l)"
-        # arithmetic removes whitespace
-        ((alltime_contribs += 0))
-        ((new_contribs      = alltime_contribs - prior_contribs))
-        printf "\nAll-time contributors\t%s\n" "$alltime_contribs"
-        printf "New contributors since %s\t%s\n" "${start_object#v}" "$new_contribs"
-    fi
-    printf "\n"
-}
-
-print_commit_stats () {
-    local start_object="$1"
-    local initial_commit="$2"
-
-    printf "====================\n"
-    printf "Commits\n"
-    printf "====================\n"
-
-    local -a git_log_cmd=("git" "log" "--no-merges" "--format='%ae'" "${start_object}..${end_object}")
-    printf "Commit count"
-    if ! [[ "$start_object" = "$initial_commit" ]]; then
-        printf " since %s" "${start_object#v}"
-    fi
-    printf "\n"
-    printf "  Casks\t"
-    "${git_log_cmd[@]}" -- "${cask_paths[@]}" | /usr/bin/wc -l
-    printf "  code\t"
-    "${git_log_cmd[@]}" -- "${code_paths[@]}" | /usr/bin/wc -l
-    printf "  docs\t"
-    "${git_log_cmd[@]}" -- "${doc_paths[@]}"  | /usr/bin/wc -l
-    printf "  any\t"
-    "${git_log_cmd[@]}" -- .                  | /usr/bin/wc -l
-    if ! [[ "$start_object" = "$initial_commit" ]]; then
-        printf "\nAll-time commits\t"
-        git log --no-merges --format='%ae' "${initial_commit}".."${end_object}" -- . | /usr/bin/wc -l
-    fi
-    printf "\n"
-}
-
-print_doc_stats () {
-    local start_object="$1"
-    local initial_commit="$2"
-
-    printf "====================\n"
-    printf "Docs\n"
-    printf "====================\n"
-
-    local -a git_log_cmd=("git" "log" "--no-merges" "--format='%ae'" "${start_object}..${end_object}")
-    printf "Doc contributors"
-    if ! [[ "$start_object" = "$initial_commit" ]]; then
-        printf " since %s" "${start_object#v}"
-    fi
-    printf "\n  "
-    "${git_log_cmd[@]}" -- "${doc_paths[@]}" | /usr/bin/sort | /usr/bin/uniq | \
-      /usr/bin/egrep -v $'^\'(paul\\.t\\.hinze@gmail\\.com|fanquake@users\\.noreply\\.github\\.com|fanquake@gmail\\.com|info@vitorgalvao\\.com|calebcenter@live\\.com|hagins\\.josh@gmail\\.com|dragon\\.vctr@gmail\\.com|github@adityadalal\\.com|adityadalal924@users\\.noreply\\.github\\.com)\'$' | \
-      "$xargs" | /usr/bin/perl -pe 's{ }{, }g'           # '
-    printf "\n"
-}
-
-print_cask_stats () {
-    local start_object="$1"
-    local initial_commit="$2"
-
-    printf "====================\n"
-    printf "Casks\n"
-    printf "====================\n"
-
-    if ! [[ "$start_object" = "$initial_commit" ]]; then
-        local     new_casks="$(git diff --name-status "$start_object" "$end_object" -- "${cask_paths[@]}" | /usr/bin/grep '^A.*\.rb' | cut -f2 | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l)"
-        local deleted_casks="$(git diff --name-status "$start_object" "$end_object" -- "${cask_paths[@]}" | /usr/bin/grep '^D.*\.rb' | cut -f2 | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l)"
-        local updated_casks="$(git diff --name-status "$start_object" "$end_object" -- "${cask_paths[@]}" | /usr/bin/grep '^M.*\.rb' | cut -f2 | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l)"
-        # arithmetic removes whitespace
-        ((cask_authors  += 0))
-        ((deleted_casks += 0))
-        ((new_casks     -= deleted_casks))
-        ((updated_casks += 0))
-        printf "%s Casks added (%s updated) by %s contributors since %s\n" "$new_casks" "$updated_casks" "$cask_authors" "${start_object#v}"
-    fi
-
-    printf "Total current Casks in HEAD\t"
-    /usr/bin/find "${cask_paths[@]}" -name '*.rb' | /usr/bin/wc -l
-    printf "\n"
-}
-
-###
-### main
-###
-
-_project_stats () {
-    local arg_object="$1"
-
-    cd_to_project_root
-    warn_if_off_branch 'master'
-
-    local initial_commit="$(git log --pretty=format:%H -- | /usr/bin/tail -1)"
-    verify_git_object "$initial_commit"
-    local start_object="$initial_commit"
-
-    if [[ "$arg_object" = 'release' ]]; then
-        start_object="$(./developer/bin/get_release_tag)"
-    elif [[ -n "$arg_object" ]]; then
-        start_object="$arg_object"
-    fi
-    verify_git_object "$start_object"
-
-    print_contributor_stats "$start_object" "$initial_commit"
-    print_commit_stats      "$start_object" "$initial_commit"
-    print_doc_stats         "$start_object" "$initial_commit"
-    print_cask_stats        "$start_object" "$initial_commit"
-}
-
-# process args
-if [[ $1 =~ ^-+h(elp)?$ ]]; then
-    printf "project_stats [ <commit-object> ]
-
-With optional single argument, (eg a tag or commit-hash)
-show statistics since that commit object.
-
-Use the special argument 'release' to calculate since the
-most recent tag (usually the same as the last release).
-
-Without argument, show statistics since first commit.
-
-"
-    exit
-fi
-
-# dispatch main
-_project_stats "${@}"
diff --git a/developer/bin/the_long_tail b/developer/bin/the_long_tail
deleted file mode 100755
index 2a4cb8e7c3..0000000000
--- a/developer/bin/the_long_tail
+++ /dev/null
@@ -1,252 +0,0 @@
-#!/usr/bin/env ruby
-#
-# the_long_tail
-#
-# A histogram view on contributor stats
-#
-# notes
-#
-# Since this script does not track file-renames in the git history, the
-# dependence of Casks upon occasional contributors/non-maintainers can
-# only be expressed as a range or lower bound.
-#
-
-###
-### dependencies
-###
-
-require "open3"
-require "set"
-
-###
-### configurable constants
-###
-
-BINS = [
-         (1..10).to_a,
-         100,
-         1000,
-       ].flatten
-
-OCCASIONAL_CUTOFF = 5
-
-CASK_PATH = "Casks".freeze
-
-# all maintainers, past and present
-MAINTAINERS = %w[
-                paul.t.hinze@gmail.com
-                fanquake@users.noreply.github.com
-                fanquake@gmail.com
-                kevin@suttle.io
-                leoj3n@gmail.com
-                nano@fdp.io
-                nanoid.xd@gmail.com
-                me@passcod.name
-                walker@pobox.com
-                info@vitorgalvao.com
-                calebcenter@live.com
-                ndr@qef.io
-                josh@joshbutts.com
-                goxberry@gmail.com
-                radek.simko@gmail.com
-                federicobond@gmail.com
-                claui@users.noreply.github.com
-                amorymeltzer@gmail.com
-                hagins.josh@gmail.com
-                dragon.vctr@gmail.com
-                mail@sebastianroeder.de
-                github@adityadalal.com
-                adityadalal924@users.noreply.github.com
-              ].freeze
-
-###
-### git methods
-###
-
-def cd_to_project_root
-  Dir.chdir File.dirname(File.expand_path(__FILE__))
-  @git_root ||= Open3.popen3(*%w[
-                                git rev-parse --show-toplevel
-                              ]) do |_stdin, stdout, _stderr|
-    begin
-      stdout.gets.chomp
-    rescue
-    end
-  end
-  Dir.chdir @git_root
-  @git_root
-end
-
-def authors
-  @authors ||= Open3.popen3(*%w[
-                               git log --no-merges --format=%ae --
-                             ]) do |_stdin, stdout, _stderr|
-    h = {}
-    stdout.each_line do |line|
-      line.chomp!
-      h[line] ||= 0
-      h[line]  += 1
-    end
-    h
-  end
-end
-
-def casks_by_author
-  @casks_by_author ||= Open3.popen3(*%w[
-                                       git log --no-merges --name-only --format=%ae --
-                                     ],
-                                    CASK_PATH) do |_stdin, stdout, _stderr|
-    email = nil
-    h = {}
-    stdout.each_line.to_a.join("").split("\n\n").each do |paragraph|
-      if paragraph.include?("Casks/")
-        lines = paragraph.split("\n")
-        email = lines.pop
-        h[email] ||= Set.new
-        h[email].merge(lines.compact)
-      else
-        email = paragraph.chomp
-      end
-    end
-    h
-  end
-end
-
-###
-### filesystem methods
-###
-
-def all_casks
-  @all_casks ||= Open3.popen2("/usr/bin/find",
-                              CASK_PATH,
-                              *%w[-type f -name *.rb]) do |_stdin, stdout|
-    stdout.each_line.map(&:chomp)
-  end
-end
-
-###
-### analysis and report methods
-###
-
-def histogram
-  if @histogram.nil?
-    @histogram = Hash[*BINS.map { |elt| [elt, 0] }.flatten]
-    authors.each do |_name, num_commits|
-      bottom = 0
-      BINS.each do |top|
-        @histogram[bottom] += 1 if num_commits >= bottom && num_commits < top
-        bottom = top
-      end
-    end
-  end
-  @histogram
-end
-
-def historic_occasional_cask_set
-  @historic_occasional_cask_set = authors.each.collect do |name, num_commits|
-    if num_commits > OCCASIONAL_CUTOFF
-      nil
-    elsif !casks_by_author.key?(name)
-      nil
-    else
-      casks_by_author[name].to_a
-    end
-  end.flatten.compact.to_set
-end
-
-def extant_occasional_cask_count
-  # avoid double-counting renames by intersecting with extant Casks
-  historic_occasional_cask_set.intersection(all_casks).count
-end
-
-def historic_nonmaintainer_cask_set
-  @historic_nonmaintainer_cask_set = authors.each.collect do |name, _num_commits|
-    if MAINTAINERS.include?(name)
-      nil
-    else
-      casks_by_author[name].to_a
-    end
-  end.flatten.compact.to_set
-end
-
-def extant_nonmaintainer_cask_count
-  # avoid double-counting renames by intersecting with extant Casks
-  historic_nonmaintainer_cask_set.intersection(all_casks).count
-end
-
-def extant_occasional_cask_percentage
-  @extant_occasional_cask_percentage ||= (100 * extant_occasional_cask_count / all_casks.count).to_i
-end
-
-def historic_occasional_cask_percentage
-  @historic_occasional_cask_percentage ||= (100 * historic_occasional_cask_set.count / all_casks.count).to_i
-end
-
-def extant_nonmaintainer_cask_percentage
-  @extant_nonmaintainer_cask_percentage ||= (100 * extant_nonmaintainer_cask_count / all_casks.count).to_i
-end
-
-def historic_nonmaintainer_cask_percentage
-  # this is so large, it might cross 100%
-  @historic_nonmaintainer_cask_percentage ||= [100, (100 * historic_nonmaintainer_cask_set.count / all_casks.count).to_i].min
-end
-
-def onetime_author_percentage
-  @onetime_author_percentage ||= (100 *
-                                  histogram[1] /
-                                  authors.length).to_i
-end
-
-def occasional_author_percentage
-  # why is it so hard to slice a hash?
-  @occasional_author_percentage ||= (100 *
-                                 (1..OCCASIONAL_CUTOFF).to_a.collect { |bin| histogram[bin] }.reduce(:+) /
-                                 authors.length).to_i
-end
-
-def graph_width
-  if @graph_width.nil?
-    @graph_width  = `/bin/stty size 2>/dev/null`.chomp.split(" ").last.to_i
-    @graph_width  = 80 if @graph_width <= 0
-    @graph_width -= 20 if @graph_width > 20
-  end
-  @graph_width
-end
-
-def graph_normalization
-  @graph_normalization ||= histogram.values.max.to_f
-end
-
-def print_header
-  puts "Commits\tContributors"
-  puts "---------------------"
-end
-
-def print_table
-  BINS.each do |bin|
-    plural = (bin % 10) == 0 ? "'s" : ""
-    graph = "." * ((histogram[bin] / graph_normalization) * graph_width)
-    puts "#{bin}#{plural}\t#{histogram[bin]}\t#{graph}"
-  end
-end
-
-def print_footer
-  puts %Q{\n#{occasional_author_percentage}% of contributors are "occasional" (with <= #{OCCASIONAL_CUTOFF} commits)}
-  puts "\n#{onetime_author_percentage}% of contributors commit only once"
-  puts "\n#{extant_occasional_cask_percentage}% - #{historic_occasional_cask_percentage}% of Casks depend on an occasional contributor"
-  puts "\n#{extant_nonmaintainer_cask_percentage}% - #{historic_nonmaintainer_cask_percentage}% of Casks depend on a contributor who is not a maintainer"
-  puts "\n"
-end
-
-def generate_report
-  print_header
-  print_table
-  print_footer
-end
-
-###
-### main
-###
-
-cd_to_project_root
-generate_report