Fix PEP8 issues in gml.py
Rewrite GML parser and generator
Adjust GML test cases
Remove references to pyparsing
Avoid spurious empty lines due to str.split('\n') in GML parser
Simplify GML parser
Fix comments in GML parser and test cases
Make stringizer/destringizer in GML parser/generator raise ValueError
Make stringizer/destringizer in GML parser/generator raise ValueError (cont'd)
Fix docstrings of generate_gml and write_gml
Simplify GML parser and add list attribute handling
Comment about 'u' string prefix removal in GML parser
Enhance GML parser/generator tests
Enhance GML parser/generator tests (cont'd)
Fix GML parser compatibility with Python 3.2
Add GML reader/writer rewrite to 2.0 release notes
Added literal destringizer/stringizer for GML reader/writer to documentation
Merge pull request #1269 from ysitu/gml

Robust handling of non-int/float/str/dict data in GML
Add network simplex method rewrite to 2.0 release notes
Fix PEP 8 issues in gpickle.py