* Add HParm class, make parameters object-oriented. supporting get range, implememt basic types of params include * vec2, vec3, vec4, intvec2, intvec3, intvec4, color, coloralpha, choice, label, toggle * Fix bug on getting string attributes
0.0.3b1
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* Update HSessionPool to support threaded task producer * Add example to create flask houdini server * Fix some bugs on setting parameter fail onto node
0.0.3b0
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* Add HSessionPool to async process multiple tasks * Support consumer/producer pattern
0.0.2b2
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* Support instancer geometry * Support choice parm of assets * Improve instantialize with message, pipename and root path
0.0.2b1
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* Make async cook use new event loop
0.0.2b0
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* Add HHeightfieldInputNode and HHeightfieldInputVolumeNode for marshall in/out heightfield