Problem:    SubRip files are not recognized.
Solution:   Add a pattern for SubRip. (closes vim/vim#11113)
https://github.com/vim/vim/commit/5a4eb55122e45444d3a6c56ce108ce29bc8e52ab

Problem:    Blueprint files are not recognized.
Solution:   Add a pattern for blueprint files. (Gabriele Musco, closes vim/vim#11107)
https://github.com/vim/vim/commit/cce82a55b8105560a2ef724999c856966337b48e

Problem:    gitignore files are not recognized.
Solution:   Add patterns for the gitignore filetype. (closes vim/vim#11102)
https://github.com/vim/vim/commit/9ba2786f15f0b53a90fd221832a5bedfc6dbfe20

Problem:    Drupal theme files are not recognized.
Solution:   Use php filetype for Drupl theme files.  Remove trailing spaces.
            (Rodrigo Aguilera, closes vim/vim#11096)
https://github.com/vim/vim/commit/8995c4cd4e697141faf74da9a87e0c1221bfb161

Problem:    gitattributes files are not recognized.
Solution:   Add patterns to match gitattributes files. (closes vim/vim#11085)
https://github.com/vim/vim/commit/7d56cfc861e57145f003315efd835cf5dfd5b145

Problem:    Jsonnet files are not recognized.
Solution:   Add a pattern for Jsonnet files. (Cezary Drożak, closes vim/vim#11073,
            closes vim/vim#11081)
https://github.com/vim/vim/commit/2a4c885d54171f68ec2c2d6eb4ae281c7fefb802

Problem:    Javascript module files are not recoginzed.
Solution:   Recognize "*.jsm" files as Javascript. (Brett Holman,
            closes vim/vim#11069)
https://github.com/vim/vim/commit/bb6c4073e79e86ef69c315338e00c12f0d8d6395

Problem:    Filetype of *.sil files not well detected.
Solution:   Inspect the file contents to guess the filetype.
https://github.com/vim/vim/commit/be807d582499acbe314ead3891481cba6ca136df

* vim-patch:9.0.0314: VDM files are not recognized

Problem:    VDM files are not recognized.
Solution:   Add patterns for VDM files. (Alessandro Pezzoni, closes vim/vim#11004)
https://github.com/vim/vim/commit/bf26941f40923d331169a4ecb7341608f5d1ca38

* vim-patch:9.0.0319: Godot shader files are not recognized

Problem:    Godot shader files are not recognized.
Solution:   Add patterns for "gdshader". (Maxim Kim, closes vim/vim#11006)
https://github.com/vim/vim/commit/d5c8f11905abc1bdf3b8864dbc40187855ed9374

fix(filetype): only pass first 100 and last lines to contents check

sufficient for current content checks and avoids performance issues for
buffers with a large number of lines

fixes #19817