New version of pcsc-lite: 1.8.18

I just released a new version of pcsc-lite 1.8.18.
pcsc-lite is a Free Software implementation of the PC/SC (or WinSCard) API for Unix systems.

Changes:
1.8.18: Ludovic Rousseau
10 August 2016

• SCardDisconnect(): much faster with SCARD_UNPOWER_CARD
• SCardConnect(): Fix a possible duplicated hCard context
• Fix compilation on FreeBSD
• Fix compilation on Solaris
• Some other minor improvements