Updated packages, rewrote player = gapless playback, faster loading

just_audio/.github/ISSUE_TEMPLATE/bug-report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: 1 backlog, bug
+assignees: ryanheise
+
+---
+
+<!--    ALL SECTIONS BELOW MUST BE COMPLETED   -->
+**Which API doesn't behave as documented, and how does it misbehave?**
+Name here the specific methods or fields that are not behaving as documented, and explain clearly what is happening.
+
+**Minimal reproduction project**
+Provide a link here using one of two options:
+1. Fork this repository and modify the example to reproduce the bug, then provide a link here.
+2. If the unmodified official example already reproduces the bug, just write "The example".
+
+**To Reproduce (i.e. user steps, not code)**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Error messages**
+
+```
+If applicable, copy & paste error message here, within the triple quotes to preserve formatting.
+```
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Desktop (please complete the following information):**
+ - OS: [e.g. MacOS + version]
+ - Browser [e.g. chrome, safari + version]
+
+**Smartphone (please complete the following information):**
+ - Device: [e.g. iPhone6]
+ - OS: [e.g. iOS8.1]
+
+**Flutter SDK version**
+```
+insert output of "flutter doctor" here
+```
+
+**Additional context**
+Add any other context about the problem here.

just_audio/.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: Community Support
+    url: https://stackoverflow.com/search?q=just_audio
+    about: Ask for help on Stack Overflow.
+  - name: New to Flutter?
+    url: https://gitter.im/flutter/flutter
+    about: Chat with other Flutter developers on Gitter.

just_audio/.github/ISSUE_TEMPLATE/documentation-request.md

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+---
+name: Documentation request
+about: Suggest an improvement to the documentation
+title: ''
+labels: 1 backlog, documentation
+assignees: ryanheise
+
+---
+
+<!--
+
+        PLEASE READ CAREFULLY!
+
+
+
+
+
+        FOR YOUR DOCUMENTATION REQUEST TO BE PROCESSED, YOU WILL NEED
+        TO FILL IN ALL SECTIONS BELOW. DON'T DELETE THE HEADINGS.
+
+
+        THANK YOU :-D
+
+
+-->
+
+**To which pages does your suggestion apply?**
+
+- Direct URL 1
+- Direct URL 2
+- ...
+
+**Quote the sentences(s) from the documentation to be improved (if any)**
+
+> Insert here. (Skip if you are proposing an entirely new section.)
+
+**Describe your suggestion**
+
+...

just_audio/.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: 1 backlog, enhancement
+assignees: ryanheise
+
+---
+
+<!--
+
+        PLEASE READ CAREFULLY!
+
+
+
+
+
+        FOR YOUR FEATURE REQUEST TO BE PROCESSED, YOU WILL NEED
+        TO FILL IN ALL SECTIONS BELOW. DON'T DELETE THE HEADINGS.
+
+
+        THANK YOU :-D
+
+
+-->
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.