proof of concept implementation of strips+golog
split into files
simplify file structure
fixed golog semantics & tests
perform proper replacement for conditions
fix bug on Sequence construct; add Test construct; change yielded action
format
better exception messages
more golog tests
add sokoban domain, planner and golog programs
fix bug in n-ary Or constructor; disambiguate __str__() of And
switch to new style syntax (golog still broken)
golog now functional again (and prettier!)
fix golog for elevator and sokoban domains (sokoban still doesn't work
however)
remove unused Variable class
refactor code: remove globals and functions, shorten some code blocks
trivial shortening
add __repr__ methods to golog constructs
Merge branch 'master' of https://github.com/fferri/pygolog

Conflicts:
	.gitignore