A small patch for 1.20 that fixes the following issues:
There are 3 files, replace the existing versions in the following locations:
1) /History Rewritten/Assets/Python/CvEventManager.py
2) /History Rewritten/Assets/Python/HR.py
3) /History Rewritten/Assets/XML/Text/HR_Traits_CIV4GameText.xml
Applying this patch shouldn't break any games in progress, but let me know if it does.
EDIT: Patch updated 25th July 2013
Traits
Humane: longer Golden Age bonus reduced to 50% from 100%
Civics
Equal Rights: Golden Age length reverted to 1/2 length
Warrior Code: Golden Age length reverted to 1/2 length
Religions
Inquisitors can now properly trigger inquisitions
Wonders
Colosseum: fixed several errors preventing it from working
Jetavanramaya: Golden Age length reverted to 1/2 length
Nazca Lines: grants a Great Spy instead of a Spy
Improvements
Pollution no longer removed when building one polluting improvement over another
Removed a debugging message whenever improvements are built
Misc
Fixed several errors with Golden Age length calculations
Fixed an error when placing cities using advanced start
Fixed an error that could cause certain civics to not function for some players
Fixed an error when playing maps with preselected civics or improvements
Humane: longer Golden Age bonus reduced to 50% from 100%
Civics
Equal Rights: Golden Age length reverted to 1/2 length
Warrior Code: Golden Age length reverted to 1/2 length
Religions
Inquisitors can now properly trigger inquisitions
Wonders
Colosseum: fixed several errors preventing it from working
Jetavanramaya: Golden Age length reverted to 1/2 length
Nazca Lines: grants a Great Spy instead of a Spy
Improvements
Pollution no longer removed when building one polluting improvement over another
Removed a debugging message whenever improvements are built
Misc
Fixed several errors with Golden Age length calculations
Fixed an error when placing cities using advanced start
Fixed an error that could cause certain civics to not function for some players
Fixed an error when playing maps with preselected civics or improvements
There are 3 files, replace the existing versions in the following locations:
1) /History Rewritten/Assets/Python/CvEventManager.py
2) /History Rewritten/Assets/Python/HR.py
3) /History Rewritten/Assets/XML/Text/HR_Traits_CIV4GameText.xml
Applying this patch shouldn't break any games in progress, but let me know if it does.
EDIT: Patch updated 25th July 2013