Add basic insert_record
Add rough update_record()
Fix syntax of update
Add get_fieldset
Merge branch 'patch-6' of github.com:sk-unikent/Rapid

Conflicts:
	src/Data/PDO.php
Merge branch 'patch-3' of github.com:sk-unikent/Rapid

Conflicts:
	src/Data/PDO.php
Merge branch 'patch-2' of github.com:sk-unikent/Rapid

Conflicts:
	src/Data/PDO.php