Shrink Python package size (wheel and tar.gz.)

I think if we remove the source maps files from the nbextension, we save a few MB:

 ls -alhSr ./ipyvuetify-1.9.4.data/data/share/jupyter/nbextensions/jupyter-vuetify
total 19848
drwxr-xr-x@  3 maartenbreddels  wheel    96B Apr  8 13:11 ..
-rw-r--r--@  1 maartenbreddels  wheel   1.1K Apr  8 10:56 extension.js
drwxr-xr-x@ 39 maartenbreddels  wheel   1.2K Apr  8 13:11 .
-rw-r--r--@  1 maartenbreddels  wheel    15K Apr  8 10:57 987b84570ea69ee660455b8d5e91f5f1.woff2
-rw-r--r--@  1 maartenbreddels  wheel    15K Apr  8 10:57 19b7a0adfdd4f808b53af7e2ce2ad4e5.woff2
-rw-r--r--@  1 maartenbreddels  wheel    15K Apr  8 10:57 5d4aeb4e5f5ef754e307d7ffaef688bd.woff2
-rw-r--r--@  1 maartenbreddels  wheel    15K Apr  8 10:57 037d830416495def72b7881024c14b7b.woff2
-rw-r--r--@  1 maartenbreddels  wheel    15K Apr  8 10:57 55536c8e9e9a532651e3cf374f290ea3.woff2
-rw-r--r--@  1 maartenbreddels  wheel    15K Apr  8 10:57 285467176f7fe6bb6a9c6873b3dad2cc.woff2
-rw-r--r--@  1 maartenbreddels  wheel    16K Apr  8 10:57 010c1aeee3c6d1cbb1d5761d80353823.woff2
-rw-r--r--@  1 maartenbreddels  wheel    16K Apr  8 10:57 6232f43d15b0e7a0bf0fe82e295bdd06.woff2
-rw-r--r--@  1 maartenbreddels  wheel    17K Apr  8 10:57 510dec37fa69fba39593e01a469ee018.woff2
-rw-r--r--@  1 maartenbreddels  wheel    17K Apr  8 10:57 d8bcbe724fd6f4ba44d0ee6a2675890f.woff2
-rw-r--r--@  1 maartenbreddels  wheel    17K Apr  8 10:57 d69924b98acd849cdeba9fbff3f88ea6.woff2
-rw-r--r--@  1 maartenbreddels  wheel    17K Apr  8 10:57 7b770d6c53423deb1a8e49d3c9175184.woff2
-rw-r--r--@  1 maartenbreddels  wheel    19K Apr  8 10:57 bafb105baeb22d965c70fe52ba6b49d9.woff
-rw-r--r--@  1 maartenbreddels  wheel    19K Apr  8 10:57 cf6613d1adf490972c557a8e318e0868.woff
-rw-r--r--@  1 maartenbreddels  wheel    19K Apr  8 10:57 a1471d1d6431c893582a5f6a250db3f9.woff
-rw-r--r--@  1 maartenbreddels  wheel    19K Apr  8 10:57 e9dbbe8a693dd275c16d32feb101f1c1.woff
-rw-r--r--@  1 maartenbreddels  wheel    19K Apr  8 10:57 8c2ade503b34e31430d6c98aa29a52a3.woff
-rw-r--r--@  1 maartenbreddels  wheel    20K Apr  8 10:57 de8b7431b74642e830af4d4f4b513ec9.woff
-rw-r--r--@  1 maartenbreddels  wheel    21K Apr  8 10:57 846d1890aee87fde5d8ced8eba360c3a.woff
-rw-r--r--@  1 maartenbreddels  wheel    21K Apr  8 10:57 d704bb3d579b7d5e40880c75705c8a71.woff
-rw-r--r--@  1 maartenbreddels  wheel    21K Apr  8 10:57 9680d5a0c32d2fd084e07bbc4c8b2923.woff
-rw-r--r--@  1 maartenbreddels  wheel    21K Apr  8 10:57 ffcc050b2d92d4b14a4fcb527ee0bcc8.woff
-rw-r--r--@  1 maartenbreddels  wheel    21K Apr  8 10:57 210a7c781f5a354a0e4985656ab456d9.woff
-rw-r--r--@  1 maartenbreddels  wheel    21K Apr  8 10:57 bc833e725c137257c2c42a789845d82f.woff
-rw-r--r--@  1 maartenbreddels  wheel    59K Apr  8 10:57 0509ab09c1b0d2200a4135803c91d6ce.woff2
-rw-r--r--@  1 maartenbreddels  wheel    68K Apr  8 10:57 96c476804d7a788cc1c05351b287ee41.eot
-rw-r--r--@  1 maartenbreddels  wheel    78K Apr  8 10:57 29b882f018fa6fe75fd338aaae6235b8.woff
-rw-r--r--@  1 maartenbreddels  wheel   170K Apr  8 10:57 da4ea5cdfca6b3baab285741f5ccb59f.ttf
-rw-r--r--@  1 maartenbreddels  wheel   247K Apr  8 10:56 nodeps.js
-rw-r--r--@  1 maartenbreddels  wheel   276K Apr  8 10:57 d0066537ab6a4c6f8285a5aeb3ba5f09.woff2
-rw-r--r--@  1 maartenbreddels  wheel   395K Apr  8 10:57 b4917be25082eb793b5363f2fdb5f282.woff
-rw-r--r--@  1 maartenbreddels  wheel   825K Apr  8 10:57 f51112347be6b44f9ef46151a971430d.ttf
-rw-r--r--@  1 maartenbreddels  wheel   825K Apr  8 10:57 2d0a0d8f5f173be15a67aa084db94fe6.eot
-rw-r--r--@  1 maartenbreddels  wheel   892K Apr  8 10:56 nodeps.js.map
-rw-r--r--@  1 maartenbreddels  wheel   1.8M Apr  8 10:57 index.js
-rw-r--r--@  1 maartenbreddels  wheel   3.6M Apr  8 10:57 index.js.map

When manually inspecting nodeps.js.map it seems to include vue sourcecode, which it should not. Also, we should be able to have the common code between index.js and nodeps.js be a shared chunk, which might save the 247k (the size of nodeps.js).

Start by inspecting the generated nbextension files under ipyvuetify-1.9.4.data/data/share/jupyter/nbextensions/jupyter-vuetify, especially index.js.map and nodeps.js.map, and trace them back to the package build configuration. Compare the wheel and tar.gz contents and sizes; done means unnecessary source maps are excluded, duplicated bundle output is reduced where appropriate, and the nbextension still works.