Version bump to 1.4

Updates test code with new clustering function prototypes.

Removes PE_FASTQ conditional branch before printing clusters in spher…

…es. Always prints matched sequence. Closes #18.

Stable release 1.1

First starcode release (v1.0)

Features:
- Exact all-pairs search using Levenshtein distance threshold.
- Clustering using spheres or message passing.
- Clustering of single or paired-end files.
- Inputs supported: file or stdin.
- Outputs supported: file or stdout.
- Multithreading support.
- Output formats: full cluster or non-redundant.