v2.6.1

Version 2.6.1 provides the ability to plot the data using the enter key. Other changes are mostly from a coding perspective whereby many pieces of code have been refactored. Finally, a number of bugs were fixed.

Changelog

1. Add ability for users to plot selected using Enter key
2. Fix crash when USGS server does not correctly return parameter names
3. Fix bug when writing .mvs file on Linux
4. Fix bug for USGS data when no station is selected but user starts plotting routines
5. Create class for session files
6. Create class for colors
7. Create class for imeds format
8. Move legend marker click handling into mov_qchartview