package/python-prompt-toolkit: bump to version 3.0.20

* The package doesn't support python2 anymore.
* The only reverse dependency, ipython, already depends on python3
* Update URL in Config.in.
* Indent with two spaces in the hash file.

Signed-off-by: Asaf Kahlon <asafka7@gmail.com>
[yann.morin.1998@free.fr:
  - actually add dependency on python3
  - add note about ipython
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/python-prompt-toolkit/Config.in

@@ -1,11 +1,11 @@
 config BR2_PACKAGE_PYTHON_PROMPT_TOOLKIT
 	bool "python-prompt-toolkit"
+	depends on BR2_PACKAGE_PYTHON3
 	select BR2_PACKAGE_PYTHON_SIX # runtime
 	select BR2_PACKAGE_PYTHON_WCWIDTH # runtime
-	select BR2_PACKAGE_PYTHON_PYEXPAT if BR2_PACKAGE_PYTHON # runtime
-	select BR2_PACKAGE_PYTHON3_PYEXPAT if BR2_PACKAGE_PYTHON3 # runtime
+	select BR2_PACKAGE_PYTHON3_PYEXPAT # runtime
 	help
 	  Library for building powerful interactive command lines in
 	  Python.
 
-	  https://github.com/jonathanslenders/python-prompt-toolkit
+	  https://github.com/prompt-toolkit/python-prompt-toolkit

package/python-prompt-toolkit/python-prompt-toolkit.hash

@@ -1,5 +1,5 @@
 # md5, sha256 from https://pypi.org/pypi/prompt-toolkit/json
-md5	5016c523e603cd7119644fbc0f00ce53  prompt_toolkit-2.0.10.tar.gz
-sha256	f15af68f66e664eaa559d4ac8a928111eebd5feda0c11738b5998045224829db  prompt_toolkit-2.0.10.tar.gz
+md5  ba9e63c3e7e5a4f4ce4e4770a4daba96  prompt_toolkit-3.0.20.tar.gz
+sha256  eb71d5a6b72ce6db177af4a7d4d7085b99756bf656d98ffcc4fecd36850eea6c  prompt_toolkit-3.0.20.tar.gz
 # Locally computed sha256 checksums
-sha256	303574d9bdd85c757d6025017942bf17baeedf2778f62bd7f425d07d880f4c4a  LICENSE
+sha256  303574d9bdd85c757d6025017942bf17baeedf2778f62bd7f425d07d880f4c4a  LICENSE

package/python-prompt-toolkit/python-prompt-toolkit.mk

@@ -4,9 +4,9 @@
 #
 ################################################################################
 
-PYTHON_PROMPT_TOOLKIT_VERSION = 2.0.10
+PYTHON_PROMPT_TOOLKIT_VERSION = 3.0.20
 PYTHON_PROMPT_TOOLKIT_SOURCE = prompt_toolkit-$(PYTHON_PROMPT_TOOLKIT_VERSION).tar.gz
-PYTHON_PROMPT_TOOLKIT_SITE = https://files.pythonhosted.org/packages/0c/37/7ad3bf3c6dbe96facf9927ddf066fdafa0f86766237cff32c3c7355d3b7c
+PYTHON_PROMPT_TOOLKIT_SITE = https://files.pythonhosted.org/packages/b4/56/9ab5868f34ab2657fba7e2192f41316252ab04edbbeb2a8583759960a1a7
 PYTHON_PROMPT_TOOLKIT_SETUP_TYPE = setuptools
 PYTHON_PROMPT_TOOLKIT_LICENSE = BSD-3-Clause
 PYTHON_PROMPT_TOOLKIT_LICENSE_FILES = LICENSE