ecchat 1.4 MVP beta

This release supports 1-2-1 messaging with a single fixed conversation specified on the command line at startup.

Enhancements since ecchat 1.3:

1 - App name added to log file name (avoids clash when ecchat and ececho are run on the same node).
2 - Added ALT+LEFT/RIGHT as an alternative to ALT+ENTER which is captured on Windows (maximize window).
3 - Added support for packet signatures added in eccoind 0.3.3.0.
4 - Temporarily disabled /swap and /execute commands pending rewrite of trusted swap feature.
5 - Windows support added with a requirement to use eccoind 0.3.3.1 or later.
6 - Implemented block refresh suppression for 1s after a new block to stop RPC churn during sync.
7 - Added ecchat startup screen with ecchat ASCII art.

ecchat 1.3 MVP beta

This release supports 1-2-1 messaging with a single fixed conversation specified on the command line at startup.