Add Support TOML Project to projects list

This adds new project proposal to current projects list

Closes #705

Author: PrajwalM2212

_projects/standardised-file-format.md

@@ -0,0 +1,87 @@
+collaborating_projects:
+  - coala
+desc: "Provide support for writing configurations using
+       a standardised file format(TOML)"
+difficulty: hard
+initiatives:
+  - GSoC
+markdown: standardised-file-format.md
+mentors:
+  - Nosferatul
+  - RaiVaibhav
+  - ksdme
+  - Marcos Gómez
+name: "Support TOML for writing configurations"
+requirements:
+  - "The applicant should have at least one patch merged to
+    coala"
+  - "The applicant should be familiar with Python."
+  - "The applicant should be familiar with coala configuration system"
+tags:
+  - Core
+  - Configuration
+  - TOML
+---
+
+This project aims to support writing configuration files using a
+standardised file format like TOML.
+Currently coala has a INI style config. It has `LineParser` and `ConfParser`
+classes to parse the settings into sections. These sections are later executed
+by running the appropriate bear. coala also a `ConfWriter` class to write
+sections back into settings file like `.coafile`
+
+This approach has certain limitations. Custom sub-level parsing in
+INI style config is tough and error prone. It makes `LineParser` and
+`ConfParser` more complex and bug prone and also would slow down the speed of
+development. A solution would be to use standardised file format like TOML.
+Using `toml.load` on the config file will return a dictionary. This makes
+custom sub-level parsing not only easy and accurate but also less error prone.
+Also more importantly completely removes the need for `LineParser`.
+
+TOML provides flexibility, consistency, backwards compatibility and standard.
+It has widespread acceptance, documentation and robust parsers. TOML has been
+recommended as the configuration file for software packages to specify their
+build dependencies. Due to its popularity it offers a reduced learning curve
+compared to INI style config.
+
+This project aims to provide Toml support for coala-quickstart as well. Also
+it will create a tool to convert coafile to TOML files and vice versa.
+TomlLintBear will be created as part of this project. Also a repository of
+good configuration files will be created to allow users to easily bootstrap
+their projects.
+
+As a stretch goal, the project aims to standardise the present coafile syntax
+to provide more flexibility.
+
+#### Milestones
+
+##### PREPARATION/BONDING
+
+- The applicant has created and merged a cEP for this project.
+- The applicant should be familiar with the codebase.
+- The applicant should know how to work with the community.
+- The mappings between `.coafile` to `TOML` must be finalised
+
+##### CODING PHASE 1
+
+- Create the mechanism to load TOML config files.
+- Create a class named `TomlConfParser` to load settings from TOML
+  file into sections.
+- Begin work on `TomlConfWriter`.
+
+##### CODING PHASE 2
+
+- Complete `TomlConfWriter` to be able to write sections into
+  TOML file.
+- Create a tool to convert coafile to TOML file and vice versa
+- Provide TOML support to coala-quickstart
+
+##### CODING PHASE 3
+
+- Create TomlLintBear
+- Create a repository of good configuration files for major languages
+- Create user facing documentation on how to write config files in TOML
+
+Apart from these core milestones, the project shall also try to
+fix issues like comment support at https://github.com/uiri/toml.
+This will help improve the overall capacity/quality of this project.