0.7.1

v0.7.1 fixes and updates

• Improved PlayerKey.map method e.g. p1.pitch to only return one value instead of a Pattern
• Improved Clock.clear to make sure Players don't reset and continue playing, which sometimes happened
• Use float instead of Fraction for timing to reduce computation time in the main clock loop. So far this hasn't had any impact on timing but please get in contact if it does. It has improved performance on low spec machines such as a Raspberry Pi.
• Improve bracket finding in the main interface so it only checks visible portion of the screen so it no longer lags if there is a large amount of text in the editor.
• Added the VRender extension, thanks to mathigatti, that allows users to add synthesised vocals. Requires Python modules MIDIUtil and urllib and musescore (Linux/Mac only). See the README for more information.