Merge branch 'GSOC-Integrator'
- ParticleAnalyser readme update
Merge branch 'GSOC-Analyzer'
Fixed some memory and resource leaks.
Fixed some common realloc mistakes, where a pointer was nulled but not freed upon failure.
Merge pull request #1 from DonChunior/master

Fixed some memory and resource leaks, as well as common realloc mistakes.
First running implementation,
tests pending.
Correcting errors in the relativity formula, minor adjustments:
- make r_body direction clear in the local code of the function to avoid confusion
- bibcode for the paper that the formula is taken from
- #defines for beta and gamma in case someone wants to test different values
Merge branch 'md_relativity' into GSOC-Integrator
Merge branch 'master' into GSOC-Integrator