Merge pull request #13 from mariogiov/fix_queue_selection

Fix queue selection, thanks to @mariogiov
Ensure that .ipython directory exists prior to cluster startup to avoid race conditions. chapmanb/bcbio-nextgen#162
v0.2.2
Fixes for SLURM integration: use reasonable memory choices for controller instead of passed engine memory usage. Ensure timelimit is properly escaped and avoid use of 'unlimited' time limits. Handle cases where queue and possible accounts do not intersect.
Ensure IPython calls occur with system executable to avoid issues with different ipython versions on PATH
Ensure SGE queue has access to parallel environment when searching for multicore environments. chapmanb/bcbio-nextgen#170
Split the pe_names.
Release v0.2.3
Allow passing additional arbitrary resource specifications to slurm scheduler
Merge pull request #5 from roryk/master

Merge from Rory upstream