- Use variables for version handling
- Update dependencies

- Update to 4.3.5
* New Diff Dialog now allows browsing for files OR directories
* Tool arguments now permit cross-branch SCM comparison
specification
* Ability to view Ancestorfile also denotes 3way mode is active
* 3-way collisions now findable via toolbar dropdown list
highlights
* Textwin labels now tooltip the name & modtime of any NON-temp
file
* Builtin editor now provides Line numbers
* Recent new color preference settings repaired to "apply"
correctly
* Crash fixed when 3-way diff was active and Lnums & Chgbars are
OFF
* Pre-startup latency msg feature now OFF (MacOS X only) stops
Crash
* Repaired Lnums,etc. to use CDR preference settings when
appropriate