v5.2

• warn if compatibility version requested is higher than the current version number
• enable to specify a minimal compatibility version for a module
• add info message to all module
• add values newest and latest to the compatibility option
• check for mhchem and chemformula and choose the formula method accordingly (chemformula module)
• fixes in the module hook mechanism
• fix in \chemmacros_if_module_loaded:n
• new internal module errorcheck