Release v1.2.0 on 2020-01-03.

1. f733176 SigProcLib: Improve Vector buffer allocation mess by Pau Espin Pedrol · 6 years ago
2. e625553 Vector: Copy arrays in a sane way for non-trivially copyable types by Pau Espin Pedrol · 6 years ago
3. e56bf3a signalVector: Implement segment(). by Alexander Chemeris · 7 years ago
4. 28670fb iface: Add inner ring-buffer implementation by Tom Tsou · 9 years ago
5. 20eb6d6 Transceiver52M: Separate signalVector into it's own file by Thomas Tsou · 11 years ago