2014.4.1:
 * Version 6.2 (Rev. 1)
 * No changes

2014.4:
 * Version 6.2 (Rev. 1)
 * Adding support for XC7Z035 and XC7A15T devices.
 * Adding support for XA/XQ device variants.

2014.3:
 * Version 6.2
 * Support core in native Vivado catalog.
 * Added example design.
 * Added demonstration testbench.
 * Added non Processor Mode.
 * Added Priority Flow Control (PFC) support in non-processor mode.
 * Added 1588 support for ultrascale devices.
 * Support optional Transceiver control and status ports in non-processor mode.

2014.2:
 * Version 6.1 (Rev. 1)
 * Support latest GT version.

2014.1:
 * Version 6.1
 * Support 1588 Correction Field format.

2013.4:
 * Version 6.0 (Rev. 1)
 * Kintex UltraScale Pre-Production support.
 * Support Include IO option for GMII.

2013.3:
 * Version 6.0
 * Added option to include or exclude shareable logic resources in the core.
 * Added support for Board based IO constraints generation.
 * Enhanced support for IP Integrator.
 * Added support for upgrade from previous versions.
 * Updated the address segment name. Please use assign bd address tool command to assign address.
 * Interface/Port names have changed. Streaming interfaces are now renamed as m_axis_rxd from AXI_STR_RXD and similarly for others. MDIO ports are packaged as an interface. Ports txp txn rxp and rxn are packaged as SGMII or SFP interfaces based on the board connectivity. To reconnect these ports you may use connection automation.

2013.2:
 * Version 5.0
 * New features like SGMII over LVDS, and IEEE 1588 support are added to this core.
 * Port names have changed.

2013.1:
 * Version 4.0
 * Native Vivado Release
 * There have been no functional or interface changes to this IP.  The version number has changed to support unique versioning in Vivado starting with 2013.1.

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