add context.md doc
initial changes to Conf Res doc
begin consolidating into one theory doc
basics.md
redirects for VC and DVV theory docs
merge with 2.0.0
fix erlang example error
merge again
start reorganizing main theory doc
more elaboration in opening section
some clarifications
clarify intro sections
more cleanup
add sibling explosion section
start fixing links
Merge branch '2.0.0' into lp/causal-context-object-changes
more link fixes
finish fixing links
Merge branch 'lp/causal-context-object-changes'