diff -r ddf75f18509f -r 02c290e2018c +mpm/checkin.m
--- a/+mpm/checkin.m	Mon Sep 17 15:46:16 2018 +0200
+++ b/+mpm/checkin.m	Mon Sep 17 15:49:39 2018 +0200
@@ -1,17 +1,9 @@
-% Set project to current folder
-function set(d)
-    if ~exist('d', 'var') || isempty(d)
-        d = '';
+% Checkin a projects subpaths to the matlab path
+function checkin(projectFolder)
+    if ~exist('projectFolder', 'var') || isempty(projectFolder)
+        projectFolder = pwd;
     end
 
-    state = mpm.load_state();
-
-    sp = mpm.subpaths(d);
-    for i = 1:length(sp)
-        subpath = fullfile(pwd, sp{i});
-        addpath(subpath);
-        state.added_paths(subpath) = true;
-    end
-
-    mpm.save_state(state);
+    m = mpm.MatlabPathManager();
+    m.checkin(projectFolder);
 end

diff -r ddf75f18509f -r 02c290e2018c +mpm/checkout.m
--- a/+mpm/checkout.m	Mon Sep 17 15:46:16 2018 +0200
+++ b/+mpm/checkout.m	Mon Sep 17 15:49:39 2018 +0200
@@ -1,17 +1,9 @@
-% Leave project in current folder
-function leave(d)
-    if ~exist('d', 'var') || isempty(d)
-        d = '';
+% Checkout a projects subpaths from the matlab path
+function checkout(projectFolder)
+    if ~exist('projectFolder', 'var') || isempty(projectFolder)
+        projectFolder = pwd;
     end
 
-    state = mpm.load_state();
-
-    sp = mpm.subpaths(d);
-    for i = 1:length(sp)
-        subpath = fullfile(pwd, sp{i});
-        rmpath(subpath);
-        state.added_paths.remove(subpath);
-    end
-
-    mpm.save_state(state);
+    m = mpm.MatlabPathManager();
+    m.checkout(projectFolder);
 end

diff -r ddf75f18509f -r 02c290e2018c +mpm/clear.m
--- a/+mpm/clear.m	Mon Sep 17 15:46:16 2018 +0200
+++ b/+mpm/clear.m	Mon Sep 17 15:49:39 2018 +0200
@@ -1,13 +1,5 @@
 % Remove all loaded subpaths from the matlab path
 function clear()
-    state = mpm.load_state();
-
-    subpaths = state.added_paths.keys();
-
-    for i = 1:length(subpaths)
-        rmpath(subpaths{i});
-        state.added_paths.remove(subpaths{i});
-    end
-
-    mpm.save_state(state);
+    m = mpm.MatlabPathManager();
+    m.clear();
 end

diff -r ddf75f18509f -r 02c290e2018c +mpm/info.m
--- a/+mpm/info.m	Mon Sep 17 15:46:16 2018 +0200
+++ b/+mpm/info.m	Mon Sep 17 15:49:39 2018 +0200
@@ -1,9 +1,8 @@
 function info()
-    state = mpm.load_state();
+    m = mpm.MatlabPathManager();
+    subpaths = m.loadedSubpaths();
 
     fprintf('Loaded subpaths:\n')
-
-    subpaths = state.added_paths.keys();
     for i = 1:length(subpaths);
         fprintf('\t%s\n', subpaths{i});
     end

diff -r ddf75f18509f -r 02c290e2018c +mpm/subpaths.m
--- a/+mpm/subpaths.m	Mon Sep 17 15:46:16 2018 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,12 +0,0 @@
-function sp = subpaths(d)
-    if ~exist('d', 'var') || isempty(d)
-        d = '';
-    end
-
-    try
-        fstr = fileread(fullfile(d, '.subpaths'));
-    catch
-        error('Subpath definition file ''.subpaths'' not found.')
-    end
-    sp = splitlines(strtrim(fstr));
-end

diff -r ddf75f18509f -r 02c290e2018c +mpm/verify.m
--- a/+mpm/verify.m	Mon Sep 17 15:46:16 2018 +0200
+++ b/+mpm/verify.m	Mon Sep 17 15:49:39 2018 +0200
@@ -3,30 +3,13 @@
 % The right version is at the top of the path
 %
 % Useful to put at the top of some scripts
-function check()
+function verify(d)
     if ~exist('d', 'var') || isempty(d)
-        d = '';
+        d = pwd;
     end
 
-    folders = split(path(), pathsep);
-
-    sp = mpm.subpaths(d);
-    for i = 1:length(sp)
-        if ~isAtTop(sp{i}, fullfile(pwd, sp{i}), folders)
-            error('Subpaths are not correctly set. Try running mpm.set()');
-        end
+    m = mpm.MatlabPathManager();
+    if ~m.verify(d)
+        error('Subpaths are not correctly loaded. Try running mpm.checkin()');
     end
 end
-
-function b = isAtTop(subpath, fullsubpath, paths)
-    for i = 1:length(paths)
-        if ~endsWith(paths{i}, subpath)
-            continue
-        end
-
-        b = strcmp(fullsubpath, paths{i});
-        return
-    end
-
-    b = false;
-end