added Ditch and Moat defensive buildings
small penalty attacking cities for Trireme and Caravel, in line with Cog
other minor corrections

minor adjustments, notably late game tech costs

Embarkation possible with Sailing, Cargo Ships with Optics
Extra trade route with Civil Service

No automatic road movement increase with Machinery - allows building an Improved Road with increased movement.
Archaeology renamed to Ancient Ways, Archaeologist to Mystic, etc. Functionally the same
Minor amendments eg slight change to City Connection gold, increasing for small cities and decreasing for large

World Wonders only grant 1 Status (Tourism)
Icebreaker ship only buildable within 2 tiles of snow or ice
No extra production for Lakes with Lighthouse. Aztec Floating Gardens +2 food for Lakes changed to +1 food, +1 production
Other minor adjustments

Slave units limited to 4 per Slave Market
Camp fires can't be built next to each other
add Science mountain yield to Observatory and decrease it's base yield modifier
rename Tourism as Status - more Medieval - and give 2 Status for each World Wonder
double prayer bonus from +5 to +10 faith
Shell Shrine now gives +1 faith total for the city, rather than +1 per resource

plus a few other minor adjustments...

finally I did some lua modding:
yields from mountains - thanks to Kevin Fitzgerald's Workable Mountains mod
clutter free culture overview of great work placements - thanks to Kyte's dynamic culture overview mod
lighthouses buildable away from coast - thanks to William Howard and Kevin Kidder's Lighthouse near Sea +Lakes mod
New era splash screens now show appropriate art

Also
new Icebreaker naval unit, slow and low strength but can move through ice and build fishing boats
inspiration from Zoltan's Crossbow mod to reduce crossbow melee strength
secondary yields to great person improvements on a road
reduce warmonger diplomatic penalties
slow fortification combat bonus
Pikemen reduced combat strength in Forest/Jungle - rebalance needed as they have more combat than swordsman, mounted bonus and no iron required and is long time til longsword.
other minor tweaks

various adjustments

adjust costs of Museum and University
adjust benefits of Sewerage

various minor adjustments