diff --git a/nbs/00a_core.causalinference.ipynb b/nbs/00a_core.causalinference.ipynb
index bdd4e01..5bfc037 100644
--- a/nbs/00a_core.causalinference.ipynb
+++ b/nbs/00a_core.causalinference.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
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-   "execution_count": 1,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -11,7 +11,7 @@
   },
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-   "execution_count": 2,
+   "execution_count": null,
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@@ -32,7 +32,7 @@
   },
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+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -42,7 +42,7 @@
   },
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-   "execution_count": 4,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -494,7 +494,7 @@
   },
   {
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-   "execution_count": 5,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -524,7 +524,7 @@
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-   "execution_count": 7,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -554,7 +554,7 @@
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   {
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-   "execution_count": 8,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -585,7 +585,7 @@
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   {
    "cell_type": "code",
-   "execution_count": 9,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -611,7 +611,7 @@
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   {
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-   "execution_count": 10,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -651,7 +651,7 @@
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   {
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-   "execution_count": 11,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -681,7 +681,7 @@
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   {
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-   "execution_count": 12,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -708,7 +708,7 @@
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   {
    "cell_type": "code",
-   "execution_count": 13,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -751,7 +751,7 @@
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   {
    "cell_type": "code",
-   "execution_count": 14,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -824,7 +824,7 @@
        "4         0  I really love my job!             0"
       ]
      },
-     "execution_count": 14,
+     "execution_count": null,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -851,7 +851,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 15,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -860,7 +860,7 @@
        "0.78"
       ]
      },
-     "execution_count": 15,
+     "execution_count": null,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -872,7 +872,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 16,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -881,7 +881,7 @@
        "0.8257142857142857"
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-     "execution_count": 16,
+     "execution_count": null,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -893,7 +893,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 17,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -902,7 +902,7 @@
        "-0.04571428571428571"
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-     "execution_count": 17,
+     "execution_count": null,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1810,18 +1810,6 @@
    "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.9.13"
   }
  },
  "nbformat": 4,
diff --git a/nbs/00b_core.causalbert.ipynb b/nbs/00b_core.causalbert.ipynb
index 802bf85..442e300 100644
--- a/nbs/00b_core.causalbert.ipynb
+++ b/nbs/00b_core.causalbert.ipynb
@@ -551,18 +551,6 @@
    "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.9.13"
   }
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diff --git a/nbs/05a_meta.base.ipynb b/nbs/05a_meta.base.ipynb
index cc31189..ff95fa5 100644
--- a/nbs/05a_meta.base.ipynb
+++ b/nbs/05a_meta.base.ipynb
@@ -348,18 +348,6 @@
    "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.9.13"
   }
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diff --git a/nbs/05c_meta.slearner.ipynb b/nbs/05c_meta.slearner.ipynb
index 4694965..6645783 100644
--- a/nbs/05c_meta.slearner.ipynb
+++ b/nbs/05c_meta.slearner.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -11,7 +11,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -32,7 +32,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -42,7 +42,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -379,7 +379,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -424,18 +424,6 @@
    "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.9.13"
   }
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  "nbformat": 4,