get_detector_geometry(): Avoid NULL dereference when beam=NULL
Report filename on terminal if it has implausibly negative reflections
Remove old beam-parameters.c
Fix brackets
Add warnings to everything which used to take a beam file
Remove vestigial lines
Record number of implausibly negative reflections in stream
Update docs
Copy and Replace when saving geometry
Fussiness
Update .gitignore
Merge branch 'master' of git://git.bitwiz.org.uk/crystfel