Among other things, adds binary templates, a manual and bitmap data visualisation.
Full changes:
Added "x86 disassembly syntax" to "View" menu to allow selecting between Intel or AT&T notation for x86 disassembly (#142).
Handle file open message used for "Open With" on macOS (#144).
Added --compare switch to jump straight into comparing two files (#141).
Fix timer leak that can cause a crash when closing the compare window or strings panel.
Add import and export functions for Intel Hex files (#102).
Add online help (#147).
Add Bitmap Data Visualisation tool (#29).
Add Binary Template support (#138).
[Emily Ellis] Save new files without the execute bit set (#154).
Include highlight colour names in context menu (#153).
Save write protect setting in rehex-meta.json (#143).
Fix several occasional crashes.
NOTE: This release accidentally broke support for versions of macOS prior to 12.0 (Monterey), version 0.5.1 fixes this and will run on 10.13 (High Sierra) or later.
