moved difference engine to wikipedia.py

https://mediawiki.org/wiki/Special:Code/pywikipedia/1006
show diff before saving

https://mediawiki.org/wiki/Special:Code/pywikipedia/1007
made page deletion function a PageLink method

https://mediawiki.org/wiki/Special:Code/pywikipedia/1008
fulltitle() now has a parameter to convert underlines to spaces

https://mediawiki.org/wiki/Special:Code/pywikipedia/1009
fix ignore list for fr:

https://mediawiki.org/wiki/Special:Code/pywikipedia/1010
ignore restored, and extended for nl:

https://mediawiki.org/wiki/Special:Code/pywikipedia/1011
To be honest, I already forgot...

https://mediawiki.org/wiki/Special:Code/pywikipedia/1012
solving bug #1009521 (but there are more bugs here...)

https://mediawiki.org/wiki/Special:Code/pywikipedia/1013
fixed bug #1010696

https://mediawiki.org/wiki/Special:Code/pywikipedia/1014
commented SubpageError out because it crashes many bots that don't have anything to
 do with sections, while not helping anywhere.
Also renamed 'Subpage' to 'Section'.

https://mediawiki.org/wiki/Special:Code/pywikipedia/1015
msg for hu:

https://mediawiki.org/wiki/Special:Code/pywikipedia/1016
removed 2 parameters from the PageLink constructor which were undocumented and obviously obsolete

https://mediawiki.org/wiki/Special:Code/pywikipedia/1017
minor encoding thingy

https://mediawiki.org/wiki/Special:Code/pywikipedia/1018
parameter incode seems useless here

https://mediawiki.org/wiki/Special:Code/pywikipedia/1019
changed fr: ignorelist to proper UTF-8

https://mediawiki.org/wiki/Special:Code/pywikipedia/1020
more ignores for nl:

https://mediawiki.org/wiki/Special:Code/pywikipedia/1021
bugfix

https://mediawiki.org/wiki/Special:Code/pywikipedia/1022
don't update now, not finished

https://mediawiki.org/wiki/Special:Code/pywikipedia/1023
decode commandline parameters correctly on windows systems

https://mediawiki.org/wiki/Special:Code/pywikipedia/1024
Add a list of all functions and methods that this library provides in the header.
Remove all debug elements.
Several minor changes that should be inconsequential (hoping...)

https://mediawiki.org/wiki/Special:Code/pywikipedia/1025