make slip39[invoice] an optional component

setup.py

@@ -10,19 +10,20 @@
 
 install_requires		= open( os.path.join( HERE, "requirements.txt" )).readlines()
 tests_require			= open( os.path.join( HERE, "requirements-tests.txt" )).readlines()
+options_require			= [
+        'gui',		# slip39[gui]:		Support PySimpleGUI/tkinter Graphical UI App
+        'serial',	# slip39[serial]:	Support serial I/O of generated wallet data
+        'wallet',	# slip39[wallet]:	Paper Wallet and BIP-38/Ethereum wallet encryption
+      # 'invoice',	# slip39[invoice]:	Generation of invoices, and associated Smart Contracts
+]
 extras_require			= {
     option: list(
         # Remove whitespace, elide blank lines and comments
         ''.join( r.split() )
         for r in open( os.path.join( HERE, f"requirements-{option}.txt" )).readlines()
         if r.strip() and not r.strip().startswith( '#' )
     )
-    for option in [
-        'gui',		# slip39[gui]:		Support PySimpleGUI/tkinter Graphical UI App
-        'serial',	# slip39[serial]:	Support serial I/O of generated wallet data
-        'wallet',	# slip39[wallet]:	Paper Wallet and BIP-38/Ethereum wallet encryption
-        'invoice',	# slip39[invoice]:	Generation of invoices, and associated Smart Contracts
-    ]
+    for option in options_require
 }
 # Make python-slip39[all] install all extra (non-tests) requirements, excluding duplicates
 extras_require['all']		= list( set( sum( extras_require.values(), [] )))

slip39/version.py

@@ -1,2 +1,2 @@
-__version_info__		= ( 11, 1, 2 )
+__version_info__		= ( 11, 2, 0 )
 __version__			= '.'.join( map( str, __version_info__ ))