* introduced new type Hz, typetraits, String conversions, command generation (not yet generated)
* incorrect unit typo
* cmd generation and compiles
* default to MHz, removed space between units for consistency with timers, min and max checks for clks
* in python, but need to change the default to Hz again for clean code and intuition
* allow ints, doubles, implicit conversions
* dont allow raw ints, doubles and implicit conversions
* fixed tests
* added operators for Hz in python
* fix test for min clk for xilinx ctb
* fix test
* fix python tests
* fixed xilinx period and default clks
* test fix
* removed the 3 clock cycle check for ctb and implemented properly the max adc clk frq for altera ctb
* removing 3 clock cycle code from xilinx as well
* formatting
* loadpattern before 3 clk cycles code
* actualtime and measurement time to be implemented in 100ns already in fw
* fix tests
* pyzmq dependency forthe tests
* fixed pyctbgui for freq
