Update .travis.yml

removed unused coverage submission code
hopefully fix coverage tools
fix travis script; build order
update alignment code
merge
add sequential to tests; add rooted/unrooted tree space functions
update alignment and add latex printing ppl
fix 4.00.1 compilation error on ppl
final fix compilation with 4.00.1
additional tree tests
additional tests; update asserts to ounit2 calls
house keeping update
additional tests; update asserts to ounit2 calls
Merge branch 'master' of github.com:amnh/phylocaml
adding alphabet comparison functions
Merge /home/nrlucaroni/Dropbox/Projects/Phylocaml
correct signature
house keeping update
Merge /home/nrlucaroni/Dropbox/Projects/Phylocaml
update alphabet module