Update year

Author: stijnvanhoey

_solved/visualization_01_matplotlib.ipynb

@@ -10,7 +10,7 @@
     "> *DS Data manipulation, analysis and visualization in Python*  \n",
     "> *May/June, 2021*\n",
     "\n",
-    "> *© 2016, Joris Van den Bossche and Stijn Van Hoey  (<mailto:[email protected]>, <mailto:[email protected]>). Licensed under [CC BY 4.0 Creative Commons](http://creativecommons.org/licenses/by/4.0/)*\n",
+    "> *© 2021, Joris Van den Bossche and Stijn Van Hoey  (<mailto:[email protected]>, <mailto:[email protected]>). Licensed under [CC BY 4.0 Creative Commons](http://creativecommons.org/licenses/by/4.0/)*\n",
     "\n",
     "---\n"
    ]

_solved/visualization_02_seaborn.ipynb

@@ -12,7 +12,7 @@
     "> *DS Data manipulation, analysis and visualization in Python*  \n",
     "> *May/June, 2021*\n",
     ">\n",
-    "> *© 2020, Joris Van den Bossche and Stijn Van Hoey  (<mailto:[email protected]>, <mailto:[email protected]>). Licensed under [CC BY 4.0 Creative Commons](http://creativecommons.org/licenses/by/4.0/)*\n",
+    "> *© 2021, Joris Van den Bossche and Stijn Van Hoey  (<mailto:[email protected]>, <mailto:[email protected]>). Licensed under [CC BY 4.0 Creative Commons](http://creativecommons.org/licenses/by/4.0/)*\n",
     "\n",
     "---\n"
    ]

_solved/visualization_03_landscape.ipynb

@@ -7,10 +7,10 @@
     "<p><font size=\"6\"><b>Python's Visualization Landscape</b></font></p>\n",
     "\n",
     "\n",
-    "> *DS Data manipulation, analysis and visualisation in Python*  \n",
-    "> *December, 2019*\n",
+    "> *DS Data manipulation, analysis and visualization in Python*  \n",
+    "> *May/June, 2021*\n",
     "\n",
-    "> *© 2016, Joris Van den Bossche and Stijn Van Hoey  (<mailto:[email protected]>, <mailto:[email protected]>). Licensed under [CC BY 4.0 Creative Commons](http://creativecommons.org/licenses/by/4.0/)*\n",
+    "> *© 2021, Joris Van den Bossche and Stijn Van Hoey  (<mailto:[email protected]>, <mailto:[email protected]>). Licensed under [CC BY 4.0 Creative Commons](http://creativecommons.org/licenses/by/4.0/)*\n",
     "\n",
     "---"
    ]
@@ -179275,9 +179275,7 @@
   },
   {
    "cell_type": "markdown",
-   "metadata": {
-    "collapsed": true
-   },
+   "metadata": {},
    "source": [
     "### Altair\n",
     "\n",
@@ -182182,9 +182180,9 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.5"
+   "version": "3.8.10"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }