add json formatter

Author: Kyle Beyer

examples/ang_frame_conversion_and_json.ipynb

@@ -232,7 +232,7 @@
     {
      "data": {
       "text/plain": [
-       "[<exfor_tools.distribution.AngularDistribution at 0x7ec423ba5fd0>]"
+       "[<exfor_tools.distribution.AngularDistribution at 0x78fb10731dd0>]"
       ]
      },
      "execution_count": 6,
@@ -374,7 +374,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 17,
+   "execution_count": 13,
    "id": "2eb7ac83-1647-41b3-897c-0da19955dd71",
    "metadata": {},
    "outputs": [
@@ -386,7 +386,7 @@
        "       145.23834956, 155.20180987])"
       ]
      },
-     "execution_count": 17,
+     "execution_count": 13,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -397,7 +397,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 13,
+   "execution_count": 14,
    "id": "c6815c08-eae7-4bce-a34b-4210aa92ee23",
    "metadata": {},
    "outputs": [],
@@ -408,7 +408,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 14,
+   "execution_count": 15,
    "id": "e8c85184-1197-4132-9a27-c3cca8149ffc",
    "metadata": {},
    "outputs": [
@@ -418,7 +418,7 @@
        "'G.Haouat, J.Lachkar, et al., Nuclear Science and Engineering 81, (4), 491 (1982); Report other than progress report: NEANDC-158 27 (1982); Report other than progress report: CEA-N-2197  (1981); Report other than progress report: INDC(FR)-0044  (1981); Conf.on Nucl.Cross Sections F.Techn.,Knoxville 1979 672 (1979); Private communication: Haouat  (1981);  Data taken from the EXFOR database, file EXFOR 21782001 dated 1982, retrieved from the IAEA Nuclear Data Services website.'"
       ]
      },
-     "execution_count": 14,
+     "execution_count": 15,
      "metadata": {},
      "output_type": "execute_result"
     }