- Update to version 20210601

- Added icons

* add-subtitle (actions)
* Allusion
* application-default-symbolic #2672
* ASCIIpOrtal #2541
* Athena File Manager
* AutoRemesher
* AwesomeBump
* Bootstrap Studio #2686
* Calibre icons (Flatpak) #2693
* Clapper #2699
* Daily Wallpaper
* DeSmuME
* Dopamine
* DSDA-Doom #2685
* DuckStation (Flathub) #2007
* EasyEffects #2680
* Electron Cash #2671
* Foot
* gtkcord
* Hatari (Flathub) #2007
* Identity
* KLatexFormula #2664
* KLayout #2683
* Knowte
* LibreWolf Community
* Mail filetype icons #2688
* application/mbox
* application/vnd.stardivision.mail
* message/rfc822
* text/vcard
* Mate Desktop #2700
* media-playlist-repeat-song/single (actions) #2675
* Mednaffe (Flathub) #2007
* Melvor Idle #2694
* Monero GUI #2678
* Motrix (Flathub) #2007
* mpv (Flathub) #2007
* Outwiker
* PC Engine (mimetypes) #2505
* Pocket Casts (app & tray) #2670
* Portal Reloaded #2667
* Programming filetype icons #2691
* application/vnd.chess-pgn
* application/x-asp
* text/vnd.wap.wmlscript
* text/x-cobol
* text/x-eiffel
* text/x-erlang
* text/x-fortran
* text/x-gradle
* text/x-gradle
* text/x-lilypond
* text/x-ms-regedit
* text/x-ocaml
* text/x-opml+xml
* text/x-scheme
* text/x-vbscript
* PyMOL (Flathub) #2007
* QElectroTech (Flathub) #2007
* Qt Creator (Flathub) #2007
* REDRIVER2
* Remote Raspberry
* Rolled Out #2674
* SciDAVis (Flathub) #2007
* Spot
* Sunvox #2689
* Super Mario 64
* tomboy-ng
* TOML (mimetypes) #2676
* torrenttools
* Tribler (Flathub) #2007
* Veusz (Flathub) #2007
* Virtual Boy (mimetypes) #2505
* Vitomu
* Worms Armageddon
* YouTube Music (app & tray)
* Yuna

- Updated icons

* 1Password (tray icons)
* Azure Data Studio #2701
* Discord (app and tray icons) #2679
* Fedora #2684
* Fedora Media Writer #2684
* Google Meet #2703
* Kitty #2673
* Linux Mint #2684
* Mint Dev Settings #2684
* PulseEffects
* Zulip #2684

- Changes and fixes

* Added and remapped a lot of mimetypes symlinks #2697
* Added Carmine folder color #2692
* Renamed Nicotine+ tray icons #2687