Add strain exercise for elixir
Add accumulate exercise for elixir and adjust specs on strain exercise
Merge pull request #1059 from petehuang/add-strain-elixir

Add strain exercise for elixir
Open perl5 curriculum
Fix typespecs in elixir strain and accumulate, move both earlier in curriculum
Clean up trailing whitespace in perl5 assignments
Detect perl5 tests
Merge pull request #1075 from petehuang/add-strain-elixir

Fix typespecs in elixir strain and accumulate, move both earlier in curr...
testall => test && test => test-assignment