Status Check: Filenaming issues

[RodneyBaker]

This is a review of Filenaming issues in Opentoonz.
At present a general inventory of related issues both open/closed include:

• Levels with two character alpha numeric filename fail #2945 Levels with two character alpha numeric filename fail Bug Enhancement by mosujiba
• AUX.pli Windows error. #2908 AUX.pli Windows error. Bug Known Issue by papio-pl
• Fix Flipbook Color Mask When Viewing TLV Files #2537 Filenaming: Invalid File Extension Warning
• (WIP) Filenaming: Sequence can start in 0 not only 1 #967 Filenaming: Sequence can start in 0 not only 1
• Fix reading escaped double-quotes in quoted strings #2829 Fix reading escaped double-quotes in quoted strings by manongjohn
• Quotations in level name result in empty scene on open #2827 Quotations in level name result in empty scene on open by artisteacher
• Save previewed frames - can't choose file format? #2712 Save previewed frames - can't choose file format by gab3d
• Allow sequenced files starting with 0 #2607 Allow sequenced files starting with 0 by manongjohn (Fixes (WIP) Filenaming: Sequence can start in 0 not only 1 #967)
• Importing an image renames it incorrectly #2306 Importing an image renames it incorrectly by DarrenTAnims
• SVG: Filenaming error with sequence import #2231 Filenaming error with SVG sequence import
• Cannot load images with simple numerical names #2209 Cannot load images with simple numerical names by RodneyBaker
• Set System Paths with Command Line Qualifiers #2143 Set System Paths with Command Line Qualifiers
• Levels lost: 0 byte files created when Projects Settings append options on (?) #2117 Levels lost: 0 byte files created when Projects Settings append options on (?)
• Filenaming: Storyplanner png "malformed frame name" error #2094 Filenaming: Storyplanner png "malformed frame name" error by matitanimata
• Filenaming: wav files with progressive numeration #1996 Filenaming: wav files with progressive numeration by matitanimata
• Number+Letter Filename Issues #1928 Number+ Letter Filename Issues
• Symlink loading issues

Closing for the present.