Sync version number to 2.5.0.pre
[55016218] tube rack slots has different tubes in spec
[55016218] remove tube association with other possible tube_rack

before saving it
fix missing requirement
version bumped to 2.5.1.pre
Use id_for instead of id_for!
Add the ability to update the solvent volume through update tube action and update tube rack action
Add specs for updating the solvent volume in the tubes
Bump version to 2.5.2.pre
Call update_tube only if tube_data is a hash
Merge pull request #50 from llh1/55556460_set_volume_for_each_tube_in_update_tube_rack_action

55556460 set volume for each tube in update tube rack action
Add indexes on uuid_resources and items tables
Bump version
Fix migrations adding unique index
Merge pull request #52 from llh1/55878858_fix_search_response_time

55878858 fix search response time
[55551906] added Travis CI build
Merge pull request #53 from ke4/55551906_add_ci_build_for_our_applications_uat

55551906 add ci build for our applications uat
Add ability to update individual aliquot in a well based on the sample it contains
Add specs for updating individual aliquot in a plate
Bump version to 2.5.5.pre