[C16] Adding plate_storer
updated clarity_elements
[C16] applied pull request comments
[C77]Added a utility to change the case of file extension
[C77] added filename utility to MANIFEST
Merge pull request #156 from benoitmangili/c16_add_freezer_step

C16 add freezer step
Merge branch 'devel' of github.com:wtsi-clarity/wtsi_clarity into use_caseinsensitive_file_extensions
[C77] accidentally changed a file extension
Merge pull request #157 from ke4/use_caseinsensitive_file_extensions

Use caseinsensitive file extensions
Prepare for Release 0.43
Merge pull request #158 from wtsi-clarity/devel

Release 0.43