diff --git a/.hadolint.yaml b/.hadolint.yaml
deleted file mode 100644
index 98bf0cd..0000000
--- a/.hadolint.yaml
+++ /dev/null
@@ -1,4 +0,0 @@
-# Following source doesn't work in most setups
-ignored:
-  - SC1090
-  - SC1091
diff --git a/.isort.cfg b/.isort.cfg
deleted file mode 100644
index b9fb3f3..0000000
--- a/.isort.cfg
+++ /dev/null
@@ -1,2 +0,0 @@
-[settings]
-profile=black
diff --git a/.markdownlint.yaml b/.markdownlint.yaml
deleted file mode 100644
index fb94039..0000000
--- a/.markdownlint.yaml
+++ /dev/null
@@ -1,10 +0,0 @@
-# Autoformatter friendly markdownlint config (all formatting rules disabled)
-default: true
-blank_lines: false
-bullet: false
-html: false
-indentation: false
-line_length: false
-spaces: false
-url: false
-whitespace: false
diff --git a/.shellcheckrc b/.shellcheckrc
deleted file mode 100644
index ce4686b..0000000
--- a/.shellcheckrc
+++ /dev/null
@@ -1,3 +0,0 @@
-# Following source doesn't work in most setups
-disable=SC1090
-disable=SC1091
diff --git a/test_interval.cpp b/test_interval.cpp
deleted file mode 100644
index 0728ad3..0000000
--- a/test_interval.cpp
+++ /dev/null
@@ -1,96 +0,0 @@
-#include <doctest/doctest.h>  // for ResultBuilder, CHECK, Expression_lhs
-
-#include <ldsgen/ild.hpp>      // for Vdcorput
-#include <list>                // for list, __list_iterator, operator!=
-#include <ostream>             // for operator<<
-#include <recti/interval.hpp>  // for Interval, operator<<, operator+, ope...
-#include <set>                 // for set, set<>::iterator
-
-using recti::Interval;
-
-TEST_CASE("Interval test") {
-    auto a = Interval{4, 8};
-    auto b = Interval{5, 6};
-    auto v = 3;
-
-    CHECK(!(a < b));
-    CHECK(!(b < a));
-    CHECK(!(a > b));
-    CHECK(!(b > a));
-    CHECK(a <= b);
-    CHECK(b <= a);
-    CHECK(a >= b);
-    CHECK(b >= a);
-
-    CHECK(!(b == a));
-    CHECK(b != a);
-
-    CHECK((a - v) + v == a);
-
-    CHECK(a.contains(4));
-    CHECK(a.contains(8));
-    CHECK(a.intersect_with(8) == Interval{8, 8});
-    CHECK(a.contains(b));
-    CHECK(a.intersect_with(b) == b);
-    CHECK(!b.contains(a));
-    CHECK(a.overlaps(b));
-    CHECK(b.overlaps(a));
-
-    CHECK(min_dist(a, b) == 0);
-}
-
-TEST_CASE("Interval of Interval test") {
-    auto a = Interval{Interval{3, 4}, Interval{8, 9}};
-    auto b = Interval{Interval{5, 6}, Interval{6, 7}};
-    auto v = 3;
-
-    CHECK(!(a < b));
-    CHECK(!(b < a));
-    CHECK(!(a > b));
-    CHECK(!(b > a));
-    CHECK(a <= b);
-    CHECK(b <= a);
-    CHECK(a >= b);
-    CHECK(b >= a);
-
-    CHECK(!(b == a));
-    CHECK(b != a);
-
-    CHECK((a - v) + v == a);
-
-    CHECK(a.contains(Interval{4, 5}));
-    CHECK(a.contains(Interval{7, 8}));
-
-    CHECK(a.intersect_with(Interval{7, 8}) == Interval{Interval{7, 7}, Interval{8, 8}});  // ???
-
-    CHECK(a.contains(b));
-    CHECK(a.intersect_with(b) == b);
-    CHECK(!b.contains(a));
-    CHECK(a.overlaps(b));
-    CHECK(b.overlaps(a));
-}
-
-TEST_CASE("Interval overlapping test") {
-    constexpr auto N = 20;
-    auto lst = std::list<Interval<unsigned int>>{};
-    auto hgenX = ildsgen::VdCorput(3, 7);
-
-    for (auto i = 0; i != N; ++i) {
-        for (auto j = 0; j != N; ++j) {
-            auto x = hgenX.pop();
-            auto xrng = Interval{x, x + 100};
-            lst.push_back(xrng);
-        }
-    }
-
-    std::set<Interval<unsigned int>> S;   // set of maximal non-overlapped rectangles
-    std::list<Interval<unsigned int>> L;  // list of the removed rectangles
-
-    for (const auto &intvl : lst) {
-        if (S.contains(intvl)) {
-            L.push_back(intvl);
-        } else {
-            S.insert(intvl);
-        }
-    }
-}
diff --git a/test_recti.cpp b/test_recti.cpp
deleted file mode 100644
index ead1fef..0000000
--- a/test_recti.cpp
+++ /dev/null
@@ -1,62 +0,0 @@
-#include <doctest/doctest.h>  // for ResultBuilder, CHECK, Expression_lhs
-
-#include <recti/halton_int.hpp>  // for recti
-#include <recti/recti.hpp>       // for Rectangle, HSegment, VSegment
-// #include <random>
-#include <ostream>  // for operator<<
-
-#include "recti/interval.hpp"  // for Interval, min_dist, overlap
-#include "recti/point.hpp"     // for Point, operator<<, operator+, operat...
-#include "recti/vector2.hpp"   // for operator/, vector2
-
-// using std::randint;
-using namespace recti;
-
-// template <typename T> struct my_point : Point<T, T> { double data; };
-
-TEST_CASE("Point test") {
-    auto a = Point<int>{4, 8};
-    auto b = Point<int>{5, 6};
-    auto v = (b - a) / 2;  // integer division
-
-    CHECK(!(a == b));
-    CHECK(a != b);
-    CHECK((a + v) + v != b);  // due to integer division
-    CHECK((a - v) + v == a);
-
-    CHECK(a.flip_xy().flip_xy() == a);
-    CHECK(a.flip_y().flip_y() == a);
-}
-
-TEST_CASE("Rectangle test") {
-    auto xrng1 = Interval{4, 8};
-    auto yrng1 = Interval{5, 7};
-    auto r1 = Rectangle{xrng1, yrng1};
-    auto xrng2 = Interval{5, 7};
-    auto yrng2 = Interval{6, 6};
-    auto r2 = Rectangle{xrng2, yrng2};
-    auto p = Point{7, 6};
-    auto v = Vector2{5, 6};
-    Rectangle r3 = r1 - v;
-
-    CHECK(r1 != r2);
-    CHECK(r3 + v == r1);
-
-    // CHECK(r1 <= p);
-    CHECK(r1.contains(p));
-    CHECK(r1.contains(r2));
-    CHECK(r1.overlaps(r2));
-    CHECK(overlap(r1, r2));
-
-    CHECK(r1.min_dist_with(r2) == 0);
-    CHECK(min_dist(r1, r2) == 0);
-}
-
-TEST_CASE("Segment test") {
-    auto xrng1 = Interval{4, 8};
-    auto yrng1 = Interval{5, 7};
-    auto s1 = HSegment{xrng1, 6};
-    auto s2 = VSegment{5, yrng1};
-
-    CHECK(s1.overlaps(s2));
-}
diff --git a/test_recti3d.cpp b/test_recti3d.cpp
deleted file mode 100644
index be6e31a..0000000
--- a/test_recti3d.cpp
+++ /dev/null
@@ -1,149 +0,0 @@
-#include <doctest/doctest.h>  // for ResultBuilder, CHECK, Expression_lhs
-
-#include <ostream>               // for operator<<
-#include <recti/halton_int.hpp>  // for recti
-#include <recti/merge_obj.hpp>   // for merge_obj
-#include <recti/recti.hpp>       // for Rectangle
-
-#include "recti/interval.hpp"  // for min_dist, Interval, overlap
-#include "recti/point.hpp"     // for Point, operator<<, operator+, operator-
-#include "recti/vector2.hpp"   // for Vector2, operator/
-
-// using std::randint;
-using namespace recti;
-
-// template <typename T> struct my_point : Point<T, T> { double data; };
-
-TEST_CASE("Point 3D test") {
-    auto a = Point{Point{40000, 80000}, 20000};
-    auto b = Point{Point{50000, 60000}, 10000};
-    auto v = (b - a) / 2;  // integer division
-
-    CHECK(!(a == b));
-    CHECK(a != b);
-    CHECK((a + v) + v == b);  // may not true due to integer division
-    CHECK((a - v) + v == a);
-
-    CHECK(a.flip_xy().flip_xy() == a);
-    // CHECK(a.flip_y().flip_y() == a);
-}
-
-TEST_CASE("Interval test") {
-    auto a = Point{Interval{4, 8}, 1};
-    auto b = Point{Interval{5, 6}, 1};
-    auto v = Vector2{3, 0};
-
-    CHECK(!(a < b));
-    CHECK(!(b < a));
-    CHECK(!(a > b));
-    CHECK(!(b > a));
-    CHECK(a <= b);
-    CHECK(b <= a);
-    CHECK(a >= b);
-    CHECK(b >= a);
-
-    CHECK(!(b == a));
-    CHECK(b != a);
-
-    CHECK((a - v) + v == a);
-
-    CHECK(a.contains(b));
-    CHECK(a.intersect_with(b) == b);
-    CHECK(!b.contains(a));
-    CHECK(a.overlaps(b));
-    CHECK(b.overlaps(a));
-
-    CHECK(min_dist(a, b) == 0);
-}
-
-TEST_CASE("Rectangle 3D test") {
-    auto xrng1 = Interval{40000, 80000};
-    auto yrng1 = Interval{50000, 70000};
-    auto r1 = Point{Rectangle{xrng1, yrng1}, 1000};
-    auto xrng2 = Interval{50000, 70000};
-    auto yrng2 = Interval{60000, 60000};
-    auto r2 = Point{Rectangle{xrng2, yrng2}, 1000};
-    auto v = Vector2{Vector2{50000, 60000}, 0};
-    auto p1 = Point{Point{70000, 60000}, 1000};
-    auto p2 = Point{Point{70000, 60000}, 2000};
-
-    CHECK(r1 != r2);
-    CHECK((r1 - v) + v == r1);
-
-    // CHECK(r1 <= p);
-    CHECK(r1.contains(p1));
-    CHECK(!r1.contains(p2));
-    CHECK(r1.contains(r2));
-    CHECK(r1.overlaps(r2));
-    CHECK(overlap(r1, r2));
-
-    CHECK(r1.min_dist_with(r2) == 0);
-    CHECK(min_dist(r1, r2) == 0);
-
-    CHECK(r1.min_dist_with(p2) == p2.min_dist_with(r1));
-    // CHECK(min_dist(r1, p2) == min_dist(p2, r1));
-}
-
-// TEST_CASE("Segment test") {
-//     auto xrng1 = Interval{4, 8};
-//     auto yrng1 = Interval{5, 7};
-//     auto s1 = HSegment{xrng1, 6};
-//     auto s2 = VSegment{5, yrng1};
-
-//     CHECK(s1.overlaps(s2));
-// }
-
-// TEST_CASE("Interval overlapping test") {
-//     constexpr auto N = 20;
-//     auto lst = std::list<Interval<unsigned int>>{};
-//     auto hgenX = Vdcorput(3, 7);
-//     // auto hgenY = Vdcorput(2, 11);
-
-//     for (auto i = 0; i != N; ++i) {
-//         for (auto j = 0; j != N; ++j) {
-//             auto xcoord = hgenX();
-//             // auto ycoord = hgenY();
-//             auto xrng = Interval{xcoord, xcoord + 100};
-//             // auto yrng = Interval{ycoord, ycoord + 100};
-//             // auto r = Rectangle{xrng, yrng};
-//             // lst.push_back(r);
-//             lst.push_back(xrng);
-//         }
-//     }
-
-//     std::set<Interval<unsigned int>> S;   // set of maximal non-overlapped
-//     rectangles std::list<Interval<unsigned int>> L;  // list of the removed
-//     rectangles
-
-//     for (const auto& intvl : lst) {
-//         if (S.find(intvl) != S.end()) {
-//             L.push_back(intvl);
-//         } else {
-//             S.insert(intvl);
-//         }
-//     }
-
-//     // for (const auto& r : S)
-//     // {
-//     //     cout << "  \\draw " << r << ";\n";
-//     // }
-//     // for (const auto& r : L)
-//     // {
-//     //     cout << "  \\draw[color=red] " << r << ";\n";
-//     // }
-// }
-
-TEST_CASE("MergeObj test") {
-    auto a = Point{40000, 80000};
-    auto b = Point{50000, 60000};
-
-    auto m1 = MergeObj{a + 50000, a - 50000};
-    auto m2 = MergeObj{b + 90000, b - 90000};
-    // auto v = Vector2{Vector2{50000, 60000}, 0};
-
-    CHECK(m1 != m2);
-    // CHECK((m1 - v) + v == m1);
-    CHECK(!overlap(m1, m2));
-    CHECK(m1.min_dist_with(m2) == m2.min_dist_with(m1));
-    CHECK(min_dist(m1, m2) == min_dist(m2, m1));
-}