Updated rate coefficient for the reaction H2O + butadiene -> 2-butenol
New estimates from the GA method, older ones had problems with endo addition to conjugated double/triple bonds as those were estimated from the exo-additions
The problem was that exo addition to conjugated bonds is faster while a slowing effect is observed for endo.
Added new reaction in Diels Alder2
C#CC=CC=C -> cyc hexatriene
This might(?) be important for aromatics.
Turning "on" family Intra Diels Alder 2

This family is important for pyrolysis chemistry, large
alkane chains with multiple unsaturated sites can add
on the double bond to lead to rings eventually leading
to aromatics.

Note: Limited testing has shown this family not to break
current RMG usuage. If it breaks normal usuage for users
the default setting should be turned off