Fix scriptAttempts and maxAttempts bugs.
Fix scriptAttempts and maxAttempts bugs.

These are now methods disguised as attributes via the @property decorator.
KEHANG/RMG-Py,faribas/RMG-Py,chatelak/RMG-Py,pierrelb/RMG-Py,nyee/RMG-Py,enochd/RMG-Py,nickvandewiele/RMG-Py,faribas/RMG-Py,chatelak/RMG-Py,comocheng/RMG-Py,nyee/RMG-Py,pierrelb/RMG-Py,KEHANG/RMG-Py,nickvandewiele/RMG-Py,comocheng/RMG-Py,enochd/RMG-Py