closes #59
add test requirements
closes #58
closes #50
closes #51
initial work on #56
#56 finish initial implementation of whoosh integration
#56 test wildcard query
#56 added fluent integration test
closes #56 with documentation for petlx.index (whoosh)
closes #53
closes #55; closes #54
v0.16
increment version
minor
fix rtfd
closes #60
v0.16.1
fix rtfd
try to fix rtfd