Merge pull request #149 from ke4/more_descriptive_error_messages

More descriptive error messages
Prepare for Release 0.41
Revert "More descriptive error messages"
Merge pull request #154 from wtsi-clarity/revert-149-more_descriptive_error_messages

Revert "More descriptive error messages"
Update Changes
[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
Fixed bed verification

For some MENTAL reason the order of the filters
in an XPath makes a difference. Do not understand
why but it fixes the problem
Merge pull request #159 from jbeast/bed_verification_fix

Fixed bed verification
Prep for release 0.44
[C43] Display and log descriptive error message
Merge branch 'devel' of github.com:wtsi-clarity/wtsi_clarity into more_descriptive_error_messages