Version 2.1.3:
   - Add support for ChipCap2 Relative Humidity and Temperature sensors

Version 2.1.2:
   - [Command-line] Performance fix (unrequested channels were being read)
   - [Command-line] Increased verbosity when -v is used
   - [QTenki] Minimum logging interval lowered from 1 second to 0.1 second
   - [QTenki] Fixed a minimize-to-tray bug
   - [QTenki] Added save messages and clear messages buttons
   - [QTenki] Errors now shown in bigview
   - [QTenki] Prevent multiple instances
   - [General] Introduce pressure-based altitude computation
   - [General] Prevent RH values from exiting the 0 - 100% range
   - [General] Introduce configurable length units
   - [General] Various small bug fixes

Version 2.1.1:
   - [Command-line] Fixed a bug which prevented usbtenkiget.exe from working
     in some environments.

Version 2.1.0:
   - [Firmwares] Updated V-USB to newer verison.
   - Add support for high precision MS5611 pressure sensor.
   - Add support for the MLX90614 infrared temperature sensor.
   - RTD temperature calibration has changed (increased precision).

Version 2.0.4:
   - Linux: Added a sample udev rules files to script/ 
		(To use the USB Tenki device without being root)
   - [Core] Support for the MPXV7002 differential pressure sensors
   - Additional documentation for building on MacOS X and fixes.

Version 2.0.3:
   - [Core] Fix a device enumeration problem

Version 2.0.2:
   - [QTenki] Log file can now be viewed while logging. New records will
     appear in real time.
   - [QTenki] Added voltage, current and power unit preferences.
   - [QTenki] Number of digits following the decimal now configurable.
   - [QTenki] Added a basic realtime graphing tab using QCustomPlot.
   - Support for Dracal USB Vendor ID

Version 1.9.7:
   - [QTenki] Scrollbars will now appear if there is not enough space.
   - [QTenki] Remember window positions and size
   - [QTenki] Options to append or overwrite file, with optional confirmation.
   - [QTenki] Added a 'log comment' field that gets written to the log file.
   - [Qtenki] Sample loop interval now configurable
   - [Command-line] Added option -x to set decimal precision

Version 1.9.6:
	- [Command-line] Fixed the month number in timestamps generated by the command line tool.
	- [QTenki] Fixed a bug where occasional logged values would appear in the default
	sensor units rather than the ones configured by the user. (Eg: An
	occasional Celcius record in a Farenheit log file).	
	- [QTenki] Configuration panel now disabled while logging to prevent inadvertant
	changes to logging formats (eg: Changing units)	
	- [QTenki] Mention that changes are automatically saved and immediate in the
	configuration panel.
	- [QTenki] Logging interval added to the log file header.

Version 1.9.5:
	- Default to the user's home directory in the log file selection dialog.
	- Fixed a timestamp bug where the current minute was logged instead of
		the current month.

Version 1.9.4:
		- Configurable units in qtenki
		- New tab "Big View" in qtenki for displaying selected channels using
		  a big font, readable from afar.
	    - Support for a calibrated PT100 RTD Sensor.

Version 1.9.3:
	General:
	    - Support for PT100 RTD Sensor using 18bit ADC
		- Version 1.9.2 virtual channel bug fix
	QTenki:
	    - Minimize to tray configuration option added.
		- Fix some configuration options which were not saved.

Version 1.9.2:
    General:
		- Added options to disable input range validation for humidex and heat index.
		- Added firmware and host support for a tachometer.
		- Updated SHT75 Relative humidity non-linearity compensation coefficients 
		  according to datasheet Rev.5 (2011).
		- Added an option to use the old coefficients (Datasheet rev.3, 2007)
		- Added a temperature corrected RH reading (sensirion only)
	       
	QTenki: 
	    - Better error handling (auto-reopen) and related logging options.
	    - Added application icons and version information to a windows rc
		  file. (Embedded in the final windows executable)

Version 1.9.1:
    General:
        - For Humidex and Heat index, when the input temperature/humidity is out of
          range, simply pass the temperature to the output. Better than displaying
          innaccurate and sometimes insane values.
	Command-line:
	    - Use the library to compute virtual channels. (code deduplication)
	QTenki:
	    - Changes to the theme.

Version 1.9.0:
	QTenki: 
		- Merged measurement type and unit together (gives Temperature - C,
		  Humidity - % etc).
		- The last heading line before the actual data is now alias.
		  Should reduce manipulations when importing in spreadsheet software.
		- Added a configuration tab.
		- System gui colors can be overridden. (For a special user who dislikes
		  the win7 default theme (too much white). Instead of changing his 
		  system theme (the sensible thing to do), he insists the application 
		  should change the colors itself. The customer is always right, but
		  at least I made this feature configurable, and off by default.

	Misc:
		- Updated Makefile.mingw in client/ and added conditionals for win32 in
			qtenki/
		- Public library API does not require including usb.h anymore

Version 1.8:
	New QTbased GUI for easy logging
    Added support for:
	  - SE95 I2C Temperature sensor
	  - ADT7410 I2C Temperature sensor
	  - D6F_V03A1 airflow sensor
	Firmware can be configured to use an external reference voltage.

Version 1.7:
	Environment variable USBTENKI_TRACE can be set for debugging.
	Added support for the TSL2561 sensor raw channels and virtual Lux Channel.